diff options
Diffstat (limited to 'qemu/hw/ipmi/isa_ipmi_kcs.c')
| -rw-r--r-- | qemu/hw/ipmi/isa_ipmi_kcs.c | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/qemu/hw/ipmi/isa_ipmi_kcs.c b/qemu/hw/ipmi/isa_ipmi_kcs.c deleted file mode 100644 index 2742ce06c..000000000 --- a/qemu/hw/ipmi/isa_ipmi_kcs.c +++ /dev/null @@ -1,495 +0,0 @@ -/* - * QEMU ISA IPMI KCS emulation - * - * Copyright (c) 2015 Corey Minyard, MontaVista Software, LLC - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "hw/hw.h" -#include "hw/ipmi/ipmi.h" -#include "hw/isa/isa.h" -#include "hw/i386/pc.h" - -#define IPMI_KCS_OBF_BIT 0 -#define IPMI_KCS_IBF_BIT 1 -#define IPMI_KCS_SMS_ATN_BIT 2 -#define IPMI_KCS_CD_BIT 3 - -#define IPMI_KCS_OBF_MASK (1 << IPMI_KCS_OBF_BIT) -#define IPMI_KCS_GET_OBF(d) (((d) >> IPMI_KCS_OBF_BIT) & 0x1) -#define IPMI_KCS_SET_OBF(d, v) (d) = (((d) & ~IPMI_KCS_OBF_MASK) | \ - (((v) & 1) << IPMI_KCS_OBF_BIT)) -#define IPMI_KCS_IBF_MASK (1 << IPMI_KCS_IBF_BIT) -#define IPMI_KCS_GET_IBF(d) (((d) >> IPMI_KCS_IBF_BIT) & 0x1) -#define IPMI_KCS_SET_IBF(d, v) (d) = (((d) & ~IPMI_KCS_IBF_MASK) | \ - (((v) & 1) << IPMI_KCS_IBF_BIT)) -#define IPMI_KCS_SMS_ATN_MASK (1 << IPMI_KCS_SMS_ATN_BIT) -#define IPMI_KCS_GET_SMS_ATN(d) (((d) >> IPMI_KCS_SMS_ATN_BIT) & 0x1) -#define IPMI_KCS_SET_SMS_ATN(d, v) (d) = (((d) & ~IPMI_KCS_SMS_ATN_MASK) | \ - (((v) & 1) << IPMI_KCS_SMS_ATN_BIT)) -#define IPMI_KCS_CD_MASK (1 << IPMI_KCS_CD_BIT) -#define IPMI_KCS_GET_CD(d) (((d) >> IPMI_KCS_CD_BIT) & 0x1) -#define IPMI_KCS_SET_CD(d, v) (d) = (((d) & ~IPMI_KCS_CD_MASK) | \ - (((v) & 1) << IPMI_KCS_CD_BIT)) - -#define IPMI_KCS_IDLE_STATE 0 -#define IPMI_KCS_READ_STATE 1 -#define IPMI_KCS_WRITE_STATE 2 -#define IPMI_KCS_ERROR_STATE 3 - -#define IPMI_KCS_GET_STATE(d) (((d) >> 6) & 0x3) -#define IPMI_KCS_SET_STATE(d, v) ((d) = ((d) & ~0xc0) | (((v) & 0x3) << 6)) - -#define IPMI_KCS_ABORT_STATUS_CMD 0x60 -#define IPMI_KCS_WRITE_START_CMD 0x61 -#define IPMI_KCS_WRITE_END_CMD 0x62 -#define IPMI_KCS_READ_CMD 0x68 - -#define IPMI_KCS_STATUS_NO_ERR 0x00 -#define IPMI_KCS_STATUS_ABORTED_ERR 0x01 -#define IPMI_KCS_STATUS_BAD_CC_ERR 0x02 -#define IPMI_KCS_STATUS_LENGTH_ERR 0x06 - -typedef struct IPMIKCS { - IPMIBmc *bmc; - - bool do_wake; - - qemu_irq irq; - - uint32_t io_base; - unsigned long io_length; - MemoryRegion io; - - bool obf_irq_set; - bool atn_irq_set; - bool use_irq; - bool irqs_enabled; - - uint8_t outmsg[MAX_IPMI_MSG_SIZE]; - uint32_t outpos; - uint32_t outlen; - - uint8_t inmsg[MAX_IPMI_MSG_SIZE]; - uint32_t inlen; - bool write_end; - - uint8_t status_reg; - uint8_t data_out_reg; - - int16_t data_in_reg; /* -1 means not written */ - int16_t cmd_reg; - - /* - * This is a response number that we send with the command to make - * sure that the response matches the command. - */ - uint8_t waiting_rsp; -} IPMIKCS; - -#define SET_OBF() \ - do { \ - IPMI_KCS_SET_OBF(ik->status_reg, 1); \ - if (ik->use_irq && ik->irqs_enabled && !ik->obf_irq_set) { \ - ik->obf_irq_set = 1; \ - if (!ik->atn_irq_set) { \ - qemu_irq_raise(ik->irq); \ - } \ - } \ - } while (0) - -static void ipmi_kcs_signal(IPMIKCS *ik, IPMIInterface *ii) -{ - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - - ik->do_wake = 1; - while (ik->do_wake) { - ik->do_wake = 0; - iic->handle_if_event(ii); - } -} - -static void ipmi_kcs_handle_event(IPMIInterface *ii) -{ - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - IPMIKCS *ik = iic->get_backend_data(ii); - - if (ik->cmd_reg == IPMI_KCS_ABORT_STATUS_CMD) { - if (IPMI_KCS_GET_STATE(ik->status_reg) != IPMI_KCS_ERROR_STATE) { - ik->waiting_rsp++; /* Invalidate the message */ - ik->outmsg[0] = IPMI_KCS_STATUS_ABORTED_ERR; - ik->outlen = 1; - ik->outpos = 0; - IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_ERROR_STATE); - SET_OBF(); - } - goto out; - } - - switch (IPMI_KCS_GET_STATE(ik->status_reg)) { - case IPMI_KCS_IDLE_STATE: - if (ik->cmd_reg == IPMI_KCS_WRITE_START_CMD) { - IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_WRITE_STATE); - ik->cmd_reg = -1; - ik->write_end = 0; - ik->inlen = 0; - SET_OBF(); - } - break; - - case IPMI_KCS_READ_STATE: - handle_read: - if (ik->outpos >= ik->outlen) { - IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_IDLE_STATE); - SET_OBF(); - } else if (ik->data_in_reg == IPMI_KCS_READ_CMD) { - ik->data_out_reg = ik->outmsg[ik->outpos]; - ik->outpos++; - SET_OBF(); - } else { - ik->outmsg[0] = IPMI_KCS_STATUS_BAD_CC_ERR; - ik->outlen = 1; - ik->outpos = 0; - IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_ERROR_STATE); - SET_OBF(); - goto out; - } - break; - - case IPMI_KCS_WRITE_STATE: - if (ik->data_in_reg != -1) { - /* - * Don't worry about input overrun here, that will be - * handled in the BMC. - */ - if (ik->inlen < sizeof(ik->inmsg)) { - ik->inmsg[ik->inlen] = ik->data_in_reg; - } - ik->inlen++; - } - if (ik->write_end) { - IPMIBmcClass *bk = IPMI_BMC_GET_CLASS(ik->bmc); - ik->outlen = 0; - ik->write_end = 0; - ik->outpos = 0; - bk->handle_command(ik->bmc, ik->inmsg, ik->inlen, sizeof(ik->inmsg), - ik->waiting_rsp); - goto out_noibf; - } else if (ik->cmd_reg == IPMI_KCS_WRITE_END_CMD) { - ik->cmd_reg = -1; - ik->write_end = 1; - } - SET_OBF(); - break; - - case IPMI_KCS_ERROR_STATE: - if (ik->data_in_reg != -1) { - IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_READ_STATE); - ik->data_in_reg = IPMI_KCS_READ_CMD; - goto handle_read; - } - break; - } - - if (ik->cmd_reg != -1) { - /* Got an invalid command */ - ik->outmsg[0] = IPMI_KCS_STATUS_BAD_CC_ERR; - ik->outlen = 1; - ik->outpos = 0; - IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_ERROR_STATE); - } - - out: - ik->cmd_reg = -1; - ik->data_in_reg = -1; - IPMI_KCS_SET_IBF(ik->status_reg, 0); - out_noibf: - return; -} - -static void ipmi_kcs_handle_rsp(IPMIInterface *ii, uint8_t msg_id, - unsigned char *rsp, unsigned int rsp_len) -{ - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - IPMIKCS *ik = iic->get_backend_data(ii); - - if (ik->waiting_rsp == msg_id) { - ik->waiting_rsp++; - if (rsp_len > sizeof(ik->outmsg)) { - ik->outmsg[0] = rsp[0]; - ik->outmsg[1] = rsp[1]; - ik->outmsg[2] = IPMI_CC_CANNOT_RETURN_REQ_NUM_BYTES; - ik->outlen = 3; - } else { - memcpy(ik->outmsg, rsp, rsp_len); - ik->outlen = rsp_len; - } - IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_READ_STATE); - ik->data_in_reg = IPMI_KCS_READ_CMD; - ipmi_kcs_signal(ik, ii); - } -} - - -static uint64_t ipmi_kcs_ioport_read(void *opaque, hwaddr addr, unsigned size) -{ - IPMIInterface *ii = opaque; - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - IPMIKCS *ik = iic->get_backend_data(ii); - uint32_t ret; - - switch (addr & 1) { - case 0: - ret = ik->data_out_reg; - IPMI_KCS_SET_OBF(ik->status_reg, 0); - if (ik->obf_irq_set) { - ik->obf_irq_set = 0; - if (!ik->atn_irq_set) { - qemu_irq_lower(ik->irq); - } - } - break; - case 1: - ret = ik->status_reg; - if (ik->atn_irq_set) { - ik->atn_irq_set = 0; - if (!ik->obf_irq_set) { - qemu_irq_lower(ik->irq); - } - } - break; - } - return ret; -} - -static void ipmi_kcs_ioport_write(void *opaque, hwaddr addr, uint64_t val, - unsigned size) -{ - IPMIInterface *ii = opaque; - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - IPMIKCS *ik = iic->get_backend_data(ii); - - if (IPMI_KCS_GET_IBF(ik->status_reg)) { - return; - } - - switch (addr & 1) { - case 0: - ik->data_in_reg = val; - break; - - case 1: - ik->cmd_reg = val; - break; - } - IPMI_KCS_SET_IBF(ik->status_reg, 1); - ipmi_kcs_signal(ik, ii); -} - -const MemoryRegionOps ipmi_kcs_io_ops = { - .read = ipmi_kcs_ioport_read, - .write = ipmi_kcs_ioport_write, - .impl = { - .min_access_size = 1, - .max_access_size = 1, - }, - .endianness = DEVICE_LITTLE_ENDIAN, -}; - -static void ipmi_kcs_set_atn(IPMIInterface *ii, int val, int irq) -{ - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - IPMIKCS *ik = iic->get_backend_data(ii); - - IPMI_KCS_SET_SMS_ATN(ik->status_reg, val); - if (val) { - if (irq && !ik->atn_irq_set && ik->use_irq && ik->irqs_enabled) { - ik->atn_irq_set = 1; - if (!ik->obf_irq_set) { - qemu_irq_raise(ik->irq); - } - } - } else { - if (ik->atn_irq_set) { - ik->atn_irq_set = 0; - if (!ik->obf_irq_set) { - qemu_irq_lower(ik->irq); - } - } - } -} - -static void ipmi_kcs_set_irq_enable(IPMIInterface *ii, int val) -{ - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - IPMIKCS *ik = iic->get_backend_data(ii); - - ik->irqs_enabled = val; -} - -static void ipmi_kcs_init(IPMIInterface *ii, Error **errp) -{ - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - IPMIKCS *ik = iic->get_backend_data(ii); - - ik->io_length = 2; - memory_region_init_io(&ik->io, NULL, &ipmi_kcs_io_ops, ii, "ipmi-kcs", 2); -} - -static void ipmi_kcs_class_init(IPMIInterfaceClass *iic) -{ - iic->init = ipmi_kcs_init; - iic->set_atn = ipmi_kcs_set_atn; - iic->handle_rsp = ipmi_kcs_handle_rsp; - iic->handle_if_event = ipmi_kcs_handle_event; - iic->set_irq_enable = ipmi_kcs_set_irq_enable; -} - - -#define TYPE_ISA_IPMI_KCS "isa-ipmi-kcs" -#define ISA_IPMI_KCS(obj) OBJECT_CHECK(ISAIPMIKCSDevice, (obj), \ - TYPE_ISA_IPMI_KCS) - -typedef struct ISAIPMIKCSDevice { - ISADevice dev; - int32_t isairq; - IPMIKCS kcs; - IPMIFwInfo fwinfo; -} ISAIPMIKCSDevice; - -static void ipmi_isa_realize(DeviceState *dev, Error **errp) -{ - ISADevice *isadev = ISA_DEVICE(dev); - ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(dev); - IPMIInterface *ii = IPMI_INTERFACE(dev); - IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); - - if (!iik->kcs.bmc) { - error_setg(errp, "IPMI device requires a bmc attribute to be set"); - return; - } - - iik->kcs.bmc->intf = ii; - - iic->init(ii, errp); - if (*errp) - return; - - if (iik->isairq > 0) { - isa_init_irq(isadev, &iik->kcs.irq, iik->isairq); - iik->kcs.use_irq = 1; - } - - qdev_set_legacy_instance_id(dev, iik->kcs.io_base, iik->kcs.io_length); - - isa_register_ioport(isadev, &iik->kcs.io, iik->kcs.io_base); - - iik->fwinfo.interface_name = "kcs"; - iik->fwinfo.interface_type = IPMI_SMBIOS_KCS; - iik->fwinfo.ipmi_spec_major_revision = 2; - iik->fwinfo.ipmi_spec_minor_revision = 0; - iik->fwinfo.base_address = iik->kcs.io_base; - iik->fwinfo.i2c_slave_address = iik->kcs.bmc->slave_addr; - iik->fwinfo.register_length = iik->kcs.io_length; - iik->fwinfo.register_spacing = 1; - iik->fwinfo.memspace = IPMI_MEMSPACE_IO; - iik->fwinfo.irq_type = IPMI_LEVEL_IRQ; - iik->fwinfo.interrupt_number = iik->isairq; - iik->fwinfo.acpi_parent = "\\_SB.PCI0.ISA"; - ipmi_add_fwinfo(&iik->fwinfo, errp); -} - -const VMStateDescription vmstate_ISAIPMIKCSDevice = { - .name = TYPE_IPMI_INTERFACE, - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_BOOL(kcs.obf_irq_set, ISAIPMIKCSDevice), - VMSTATE_BOOL(kcs.atn_irq_set, ISAIPMIKCSDevice), - VMSTATE_BOOL(kcs.use_irq, ISAIPMIKCSDevice), - VMSTATE_BOOL(kcs.irqs_enabled, ISAIPMIKCSDevice), - VMSTATE_UINT32(kcs.outpos, ISAIPMIKCSDevice), - VMSTATE_VBUFFER_UINT32(kcs.outmsg, ISAIPMIKCSDevice, 1, NULL, 0, - kcs.outlen), - VMSTATE_VBUFFER_UINT32(kcs.inmsg, ISAIPMIKCSDevice, 1, NULL, 0, - kcs.inlen), - VMSTATE_BOOL(kcs.write_end, ISAIPMIKCSDevice), - VMSTATE_UINT8(kcs.status_reg, ISAIPMIKCSDevice), - VMSTATE_UINT8(kcs.data_out_reg, ISAIPMIKCSDevice), - VMSTATE_INT16(kcs.data_in_reg, ISAIPMIKCSDevice), - VMSTATE_INT16(kcs.cmd_reg, ISAIPMIKCSDevice), - VMSTATE_UINT8(kcs.waiting_rsp, ISAIPMIKCSDevice), - VMSTATE_END_OF_LIST() - } -}; - -static void isa_ipmi_kcs_init(Object *obj) -{ - ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(obj); - - ipmi_bmc_find_and_link(obj, (Object **) &iik->kcs.bmc); - - vmstate_register(NULL, 0, &vmstate_ISAIPMIKCSDevice, iik); -} - -static void *isa_ipmi_kcs_get_backend_data(IPMIInterface *ii) -{ - ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii); - - return &iik->kcs; -} - -static Property ipmi_isa_properties[] = { - DEFINE_PROP_UINT32("ioport", ISAIPMIKCSDevice, kcs.io_base, 0xca2), - DEFINE_PROP_INT32("irq", ISAIPMIKCSDevice, isairq, 5), - DEFINE_PROP_END_OF_LIST(), -}; - -static void isa_ipmi_kcs_class_init(ObjectClass *oc, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(oc); - IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc); - - dc->realize = ipmi_isa_realize; - dc->props = ipmi_isa_properties; - - iic->get_backend_data = isa_ipmi_kcs_get_backend_data; - ipmi_kcs_class_init(iic); -} - -static const TypeInfo isa_ipmi_kcs_info = { - .name = TYPE_ISA_IPMI_KCS, - .parent = TYPE_ISA_DEVICE, - .instance_size = sizeof(ISAIPMIKCSDevice), - .instance_init = isa_ipmi_kcs_init, - .class_init = isa_ipmi_kcs_class_init, - .interfaces = (InterfaceInfo[]) { - { TYPE_IPMI_INTERFACE }, - { } - } -}; - -static void ipmi_register_types(void) -{ - type_register_static(&isa_ipmi_kcs_info); -} - -type_init(ipmi_register_types) |