322 lines
13 KiB
C
322 lines
13 KiB
C
/*
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* QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
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*
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* RTAS events handling
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*
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* Copyright (c) 2012 David Gibson, IBM Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#include "cpu.h"
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#include "sysemu/sysemu.h"
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#include "char/char.h"
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#include "hw/qdev.h"
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#include "sysemu/device_tree.h"
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#include "hw/spapr.h"
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#include "hw/spapr_vio.h"
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#include <libfdt.h>
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struct rtas_error_log {
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uint32_t summary;
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#define RTAS_LOG_VERSION_MASK 0xff000000
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#define RTAS_LOG_VERSION_6 0x06000000
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#define RTAS_LOG_SEVERITY_MASK 0x00e00000
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#define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000
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#define RTAS_LOG_SEVERITY_FATAL 0x00a00000
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#define RTAS_LOG_SEVERITY_ERROR 0x00800000
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#define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000
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#define RTAS_LOG_SEVERITY_WARNING 0x00400000
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#define RTAS_LOG_SEVERITY_EVENT 0x00200000
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#define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000
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#define RTAS_LOG_DISPOSITION_MASK 0x00180000
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#define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000
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#define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000
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#define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000
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#define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000
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#define RTAS_LOG_INITIATOR_MASK 0x0000f000
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#define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000
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#define RTAS_LOG_INITIATOR_CPU 0x00001000
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#define RTAS_LOG_INITIATOR_PCI 0x00002000
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#define RTAS_LOG_INITIATOR_MEMORY 0x00004000
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#define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000
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#define RTAS_LOG_TARGET_MASK 0x00000f00
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#define RTAS_LOG_TARGET_UNKNOWN 0x00000000
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#define RTAS_LOG_TARGET_CPU 0x00000100
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#define RTAS_LOG_TARGET_PCI 0x00000200
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#define RTAS_LOG_TARGET_MEMORY 0x00000400
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#define RTAS_LOG_TARGET_HOTPLUG 0x00000600
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#define RTAS_LOG_TYPE_MASK 0x000000ff
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#define RTAS_LOG_TYPE_OTHER 0x00000000
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#define RTAS_LOG_TYPE_RETRY 0x00000001
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#define RTAS_LOG_TYPE_TCE_ERR 0x00000002
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#define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003
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#define RTAS_LOG_TYPE_TIMEOUT 0x00000004
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#define RTAS_LOG_TYPE_DATA_PARITY 0x00000005
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#define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006
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#define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007
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#define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008
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#define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009
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#define RTAS_LOG_TYPE_ECC_CORR 0x0000000a
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#define RTAS_LOG_TYPE_EPOW 0x00000040
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uint32_t extended_length;
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} QEMU_PACKED;
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struct rtas_event_log_v6 {
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uint8_t b0;
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#define RTAS_LOG_V6_B0_VALID 0x80
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#define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40
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#define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20
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#define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10
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#define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08
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#define RTAS_LOG_V6_B0_NEW_LOG 0x04
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#define RTAS_LOG_V6_B0_BIGENDIAN 0x02
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uint8_t _resv1;
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uint8_t b2;
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#define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80
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#define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f
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#define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e
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uint8_t _resv2[9];
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uint32_t company;
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#define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */
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} QEMU_PACKED;
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struct rtas_event_log_v6_section_header {
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uint16_t section_id;
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uint16_t section_length;
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uint8_t section_version;
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uint8_t section_subtype;
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uint16_t creator_component_id;
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} QEMU_PACKED;
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struct rtas_event_log_v6_maina {
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#define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */
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struct rtas_event_log_v6_section_header hdr;
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uint32_t creation_date; /* BCD: YYYYMMDD */
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uint32_t creation_time; /* BCD: HHMMSS00 */
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uint8_t _platform1[8];
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char creator_id;
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uint8_t _resv1[2];
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uint8_t section_count;
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uint8_t _resv2[4];
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uint8_t _platform2[8];
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uint32_t plid;
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uint8_t _platform3[4];
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} QEMU_PACKED;
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struct rtas_event_log_v6_mainb {
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#define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */
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struct rtas_event_log_v6_section_header hdr;
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uint8_t subsystem_id;
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uint8_t _platform1;
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uint8_t event_severity;
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uint8_t event_subtype;
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uint8_t _platform2[4];
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uint8_t _resv1[2];
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uint16_t action_flags;
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uint8_t _resv2[4];
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} QEMU_PACKED;
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struct rtas_event_log_v6_epow {
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#define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */
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struct rtas_event_log_v6_section_header hdr;
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uint8_t sensor_value;
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#define RTAS_LOG_V6_EPOW_ACTION_RESET 0
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#define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1
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#define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2
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#define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3
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#define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4
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#define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5
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#define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7
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uint8_t event_modifier;
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#define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1
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#define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2
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#define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3
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#define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4
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uint8_t extended_modifier;
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#define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0
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#define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1
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uint8_t _resv;
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uint64_t reason_code;
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} QEMU_PACKED;
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struct epow_log_full {
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struct rtas_error_log hdr;
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struct rtas_event_log_v6 v6hdr;
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struct rtas_event_log_v6_maina maina;
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struct rtas_event_log_v6_mainb mainb;
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struct rtas_event_log_v6_epow epow;
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} QEMU_PACKED;
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#define EVENT_MASK_INTERNAL_ERRORS 0x80000000
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#define EVENT_MASK_EPOW 0x40000000
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#define EVENT_MASK_HOTPLUG 0x10000000
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#define EVENT_MASK_IO 0x08000000
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#define _FDT(exp) \
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do { \
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int ret = (exp); \
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if (ret < 0) { \
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fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \
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#exp, fdt_strerror(ret)); \
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exit(1); \
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} \
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} while (0)
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void spapr_events_fdt_skel(void *fdt, uint32_t epow_irq)
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{
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uint32_t epow_irq_ranges[] = {cpu_to_be32(epow_irq), cpu_to_be32(1)};
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uint32_t epow_interrupts[] = {cpu_to_be32(epow_irq), 0};
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_FDT((fdt_begin_node(fdt, "event-sources")));
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_FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
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_FDT((fdt_property_cell(fdt, "#interrupt-cells", 2)));
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_FDT((fdt_property(fdt, "interrupt-ranges",
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epow_irq_ranges, sizeof(epow_irq_ranges))));
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_FDT((fdt_begin_node(fdt, "epow-events")));
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_FDT((fdt_property(fdt, "interrupts",
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epow_interrupts, sizeof(epow_interrupts))));
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_FDT((fdt_end_node(fdt)));
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_FDT((fdt_end_node(fdt)));
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}
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static struct epow_log_full *pending_epow;
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static uint32_t next_plid;
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static void spapr_powerdown_req(Notifier *n, void *opaque)
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{
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sPAPREnvironment *spapr = container_of(n, sPAPREnvironment, epow_notifier);
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struct rtas_error_log *hdr;
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struct rtas_event_log_v6 *v6hdr;
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struct rtas_event_log_v6_maina *maina;
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struct rtas_event_log_v6_mainb *mainb;
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struct rtas_event_log_v6_epow *epow;
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struct tm tm;
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int year;
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if (pending_epow) {
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/* For now, we just throw away earlier events if two come
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* along before any are consumed. This is sufficient for our
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* powerdown messages, but we'll need more if we do more
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* general error/event logging */
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g_free(pending_epow);
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}
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pending_epow = g_malloc0(sizeof(*pending_epow));
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hdr = &pending_epow->hdr;
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v6hdr = &pending_epow->v6hdr;
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maina = &pending_epow->maina;
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mainb = &pending_epow->mainb;
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epow = &pending_epow->epow;
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hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6
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| RTAS_LOG_SEVERITY_EVENT
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| RTAS_LOG_DISPOSITION_NOT_RECOVERED
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| RTAS_LOG_OPTIONAL_PART_PRESENT
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| RTAS_LOG_TYPE_EPOW);
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hdr->extended_length = cpu_to_be32(sizeof(*pending_epow)
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- sizeof(pending_epow->hdr));
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v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG
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| RTAS_LOG_V6_B0_BIGENDIAN;
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v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT
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| RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT;
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v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM);
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maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA);
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maina->hdr.section_length = cpu_to_be16(sizeof(*maina));
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/* FIXME: section version, subtype and creator id? */
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qemu_get_timedate(&tm, spapr->rtc_offset);
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year = tm.tm_year + 1900;
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maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24)
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| (to_bcd(year % 100) << 16)
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| (to_bcd(tm.tm_mon + 1) << 8)
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| to_bcd(tm.tm_mday));
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maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24)
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| (to_bcd(tm.tm_min) << 16)
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| (to_bcd(tm.tm_sec) << 8));
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maina->creator_id = 'H'; /* Hypervisor */
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maina->section_count = 3; /* Main-A, Main-B and EPOW */
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maina->plid = next_plid++;
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mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
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mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
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/* FIXME: section version, subtype and creator id? */
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mainb->subsystem_id = 0xa0; /* External environment */
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mainb->event_severity = 0x00; /* Informational / non-error */
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mainb->event_subtype = 0xd0; /* Normal shutdown */
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epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW);
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epow->hdr.section_length = cpu_to_be16(sizeof(*epow));
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epow->hdr.section_version = 2; /* includes extended modifier */
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/* FIXME: section subtype and creator id? */
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epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN;
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epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL;
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epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC;
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qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->epow_irq));
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}
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static void check_exception(sPAPREnvironment *spapr,
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uint32_t token, uint32_t nargs,
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target_ulong args,
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uint32_t nret, target_ulong rets)
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{
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uint32_t mask, buf, len;
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uint64_t xinfo;
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if ((nargs < 6) || (nargs > 7) || nret != 1) {
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rtas_st(rets, 0, -3);
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return;
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}
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xinfo = rtas_ld(args, 1);
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mask = rtas_ld(args, 2);
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buf = rtas_ld(args, 4);
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len = rtas_ld(args, 5);
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if (nargs == 7) {
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xinfo |= (uint64_t)rtas_ld(args, 6) << 32;
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}
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if ((mask & EVENT_MASK_EPOW) && pending_epow) {
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if (sizeof(*pending_epow) < len) {
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len = sizeof(*pending_epow);
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}
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cpu_physical_memory_write(buf, pending_epow, len);
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g_free(pending_epow);
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pending_epow = NULL;
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rtas_st(rets, 0, 0);
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} else {
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rtas_st(rets, 0, 1);
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}
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}
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void spapr_events_init(sPAPREnvironment *spapr)
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{
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spapr->epow_irq = spapr_allocate_msi(0);
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spapr->epow_notifier.notify = spapr_powerdown_req;
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qemu_register_powerdown_notifier(&spapr->epow_notifier);
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spapr_rtas_register("check-exception", check_exception);
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}
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