diff options
Diffstat (limited to 'hw/ipmi')
| -rw-r--r-- | hw/ipmi/Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/ipmi/ipmi_kcs.c | 408 | ||||
| -rw-r--r-- | hw/ipmi/isa_ipmi_kcs.c | 417 |
3 files changed, 430 insertions, 397 deletions
diff --git a/hw/ipmi/Makefile.objs b/hw/ipmi/Makefile.objs index 1b422bbee0..6835d2f64a 100644 --- a/hw/ipmi/Makefile.objs +++ b/hw/ipmi/Makefile.objs @@ -1,4 +1,4 @@ -common-obj-$(CONFIG_IPMI) += ipmi.o +common-obj-$(CONFIG_IPMI) += ipmi.o ipmi_kcs.o common-obj-$(CONFIG_IPMI_LOCAL) += ipmi_bmc_sim.o common-obj-$(CONFIG_IPMI_EXTERN) += ipmi_bmc_extern.o common-obj-$(CONFIG_ISA_IPMI_KCS) += isa_ipmi_kcs.o diff --git a/hw/ipmi/ipmi_kcs.c b/hw/ipmi/ipmi_kcs.c new file mode 100644 index 0000000000..dab1af8bc8 --- /dev/null +++ b/hw/ipmi/ipmi_kcs.c @@ -0,0 +1,408 @@ +/* + * QEMU IPMI KCS emulation + * + * Copyright (c) 2015,2017 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 "migration/vmstate.h" +#include "qemu/log.h" +#include "qapi/error.h" +#include "hw/ipmi/ipmi_kcs.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 + +static void ipmi_kcs_raise_irq(IPMIKCS *ik) +{ + if (ik->use_irq && ik->irqs_enabled && ik->raise_irq) { + ik->raise_irq(ik); + } +} + +static void ipmi_kcs_lower_irq(IPMIKCS *ik) +{ + if (ik->lower_irq) { + ik->lower_irq(ik); + } +} + +#define SET_OBF() \ + do { \ + IPMI_KCS_SET_OBF(ik->status_reg, 1); \ + if (!ik->obf_irq_set) { \ + ik->obf_irq_set = 1; \ + if (!ik->atn_irq_set) { \ + ipmi_kcs_raise_irq(ik); \ + } \ + } \ + } 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) { + ipmi_kcs_lower_irq(ik); + } + } + break; + case 1: + ret = ik->status_reg; + if (ik->atn_irq_set) { + ik->atn_irq_set = 0; + if (!ik->obf_irq_set) { + ipmi_kcs_lower_irq(ik); + } + } + 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->atn_irq_set = 1; + if (!ik->obf_irq_set) { + ipmi_kcs_raise_irq(ik); + } + } + } else { + if (ik->atn_irq_set) { + ik->atn_irq_set = 0; + if (!ik->obf_irq_set) { + ipmi_kcs_lower_irq(ik); + } + } + } +} + +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); +} + +int ipmi_kcs_vmstate_post_load(void *opaque, int version) +{ + IPMIKCS *ik = opaque; + + /* Make sure all the values are sane. */ + if (ik->outpos >= MAX_IPMI_MSG_SIZE || ik->outlen >= MAX_IPMI_MSG_SIZE || + ik->outpos >= ik->outlen) { + qemu_log_mask(LOG_GUEST_ERROR, + "ipmi:kcs: vmstate transfer received bad out values: %d %d\n", + ik->outpos, ik->outlen); + ik->outpos = 0; + ik->outlen = 0; + } + + if (ik->inlen >= MAX_IPMI_MSG_SIZE) { + qemu_log_mask(LOG_GUEST_ERROR, + "ipmi:kcs: vmstate transfer received bad in value: %d\n", + ik->inlen); + ik->inlen = 0; + } + + return 0; +} + +static bool vmstate_kcs_before_version2(void *opaque, int version) +{ + return version <= 1; +} + +const VMStateDescription vmstate_IPMIKCS = { + .name = TYPE_IPMI_INTERFACE_PREFIX "kcs", + .version_id = 2, + .minimum_version_id = 1, + .post_load = ipmi_kcs_vmstate_post_load, + .fields = (VMStateField[]) { + VMSTATE_BOOL(obf_irq_set, IPMIKCS), + VMSTATE_BOOL(atn_irq_set, IPMIKCS), + VMSTATE_UNUSED_TEST(vmstate_kcs_before_version2, 1), /* Was use_irq */ + VMSTATE_BOOL(irqs_enabled, IPMIKCS), + VMSTATE_UINT32(outpos, IPMIKCS), + VMSTATE_UINT32_V(outlen, IPMIKCS, 2), + VMSTATE_UINT8_ARRAY(outmsg, IPMIKCS, MAX_IPMI_MSG_SIZE), + VMSTATE_UINT32_V(inlen, IPMIKCS, 2), + VMSTATE_UINT8_ARRAY(inmsg, IPMIKCS, MAX_IPMI_MSG_SIZE), + VMSTATE_BOOL(write_end, IPMIKCS), + VMSTATE_UINT8(status_reg, IPMIKCS), + VMSTATE_UINT8(data_out_reg, IPMIKCS), + VMSTATE_INT16(data_in_reg, IPMIKCS), + VMSTATE_INT16(cmd_reg, IPMIKCS), + VMSTATE_UINT8(waiting_rsp, IPMIKCS), + VMSTATE_END_OF_LIST() + } +}; + +void ipmi_kcs_get_fwinfo(IPMIKCS *ik, IPMIFwInfo *info) +{ + info->interface_name = "kcs"; + info->interface_type = IPMI_SMBIOS_KCS; + info->ipmi_spec_major_revision = 2; + info->ipmi_spec_minor_revision = 0; + info->base_address = ik->io_base; + info->i2c_slave_address = ik->bmc->slave_addr; + info->register_length = ik->io_length; + info->register_spacing = 1; + info->memspace = IPMI_MEMSPACE_IO; + info->irq_type = IPMI_LEVEL_IRQ; +} + +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; +} diff --git a/hw/ipmi/isa_ipmi_kcs.c b/hw/ipmi/isa_ipmi_kcs.c index 374b2a0709..8e32774f85 100644 --- a/hw/ipmi/isa_ipmi_kcs.c +++ b/hw/ipmi/isa_ipmi_kcs.c @@ -1,7 +1,7 @@ /* * QEMU ISA IPMI KCS emulation * - * Copyright (c) 2015 Corey Minyard, MontaVista Software, LLC + * Copyright (c) 2015,2017 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 @@ -26,338 +26,12 @@ #include "qemu/log.h" #include "qemu/module.h" #include "qapi/error.h" -#include "hw/ipmi/ipmi.h" #include "hw/irq.h" +#include "hw/ipmi/ipmi_kcs.h" #include "hw/isa/isa.h" #include "hw/qdev-properties.h" #include "migration/vmstate.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); -} - #define TYPE_ISA_IPMI_KCS "isa-ipmi-kcs" #define ISA_IPMI_KCS(obj) OBJECT_CHECK(ISAIPMIKCSDevice, (obj), \ TYPE_ISA_IPMI_KCS) @@ -365,36 +39,32 @@ static void ipmi_kcs_init(IPMIInterface *ii, Error **errp) typedef struct ISAIPMIKCSDevice { ISADevice dev; int32_t isairq; + qemu_irq irq; IPMIKCS kcs; uint32_t uuid; } ISAIPMIKCSDevice; -static void ipmi_kcs_get_fwinfo(IPMIInterface *ii, IPMIFwInfo *info) +static void isa_ipmi_kcs_get_fwinfo(IPMIInterface *ii, IPMIFwInfo *info) { ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii); - info->interface_name = "kcs"; - info->interface_type = IPMI_SMBIOS_KCS; - info->ipmi_spec_major_revision = 2; - info->ipmi_spec_minor_revision = 0; - info->base_address = iik->kcs.io_base; - info->i2c_slave_address = iik->kcs.bmc->slave_addr; - info->register_length = iik->kcs.io_length; - info->register_spacing = 1; - info->memspace = IPMI_MEMSPACE_IO; - info->irq_type = IPMI_LEVEL_IRQ; + ipmi_kcs_get_fwinfo(&iik->kcs, info); info->interrupt_number = iik->isairq; info->uuid = iik->uuid; } -static void ipmi_kcs_class_init(IPMIInterfaceClass *iic) +static void isa_ipmi_kcs_raise_irq(IPMIKCS *ik) { - 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; - iic->get_fwinfo = ipmi_kcs_get_fwinfo; + ISAIPMIKCSDevice *iik = ik->opaque; + + qemu_irq_raise(iik->irq); +} + +static void isa_ipmi_kcs_lower_irq(IPMIKCS *ik) +{ + ISAIPMIKCSDevice *iik = ik->opaque; + + qemu_irq_lower(iik->irq); } static void ipmi_isa_realize(DeviceState *dev, Error **errp) @@ -412,14 +82,17 @@ static void ipmi_isa_realize(DeviceState *dev, Error **errp) iik->uuid = ipmi_next_uuid(); iik->kcs.bmc->intf = ii; + iik->kcs.opaque = iik; iic->init(ii, errp); if (*errp) return; if (iik->isairq > 0) { - isa_init_irq(isadev, &iik->kcs.irq, iik->isairq); + isa_init_irq(isadev, &iik->irq, iik->isairq); iik->kcs.use_irq = 1; + iik->kcs.raise_irq = isa_ipmi_kcs_raise_irq; + iik->kcs.lower_irq = isa_ipmi_kcs_lower_irq; } qdev_set_legacy_instance_id(dev, iik->kcs.io_base, iik->kcs.io_length); @@ -427,60 +100,11 @@ static void ipmi_isa_realize(DeviceState *dev, Error **errp) isa_register_ioport(isadev, &iik->kcs.io, iik->kcs.io_base); } -static int ipmi_kcs_vmstate_post_load(void *opaque, int version) -{ - IPMIKCS *ik = opaque; - - /* Make sure all the values are sane. */ - if (ik->outpos >= MAX_IPMI_MSG_SIZE || ik->outlen >= MAX_IPMI_MSG_SIZE || - ik->outpos >= ik->outlen) { - qemu_log_mask(LOG_GUEST_ERROR, - "ipmi:kcs: vmstate transfer received bad out values: %d %d\n", - ik->outpos, ik->outlen); - ik->outpos = 0; - ik->outlen = 0; - } - - if (ik->inlen >= MAX_IPMI_MSG_SIZE) { - qemu_log_mask(LOG_GUEST_ERROR, - "ipmi:kcs: vmstate transfer received bad in value: %d\n", - ik->inlen); - ik->inlen = 0; - } - - return 0; -} - static bool vmstate_kcs_before_version2(void *opaque, int version) { return version <= 1; } -static const VMStateDescription vmstate_IPMIKCS = { - .name = TYPE_IPMI_INTERFACE_PREFIX "kcs", - .version_id = 2, - .minimum_version_id = 1, - .post_load = ipmi_kcs_vmstate_post_load, - .fields = (VMStateField[]) { - VMSTATE_BOOL(obf_irq_set, IPMIKCS), - VMSTATE_BOOL(atn_irq_set, IPMIKCS), - VMSTATE_UNUSED_TEST(vmstate_kcs_before_version2, 1), /* Was use_irq */ - VMSTATE_BOOL(irqs_enabled, IPMIKCS), - VMSTATE_UINT32(outpos, IPMIKCS), - VMSTATE_UINT32_V(outlen, IPMIKCS, 2), - VMSTATE_UINT8_ARRAY(outmsg, IPMIKCS, MAX_IPMI_MSG_SIZE), - VMSTATE_UINT32_V(inlen, IPMIKCS, 2), - VMSTATE_UINT8_ARRAY(inmsg, IPMIKCS, MAX_IPMI_MSG_SIZE), - VMSTATE_BOOL(write_end, IPMIKCS), - VMSTATE_UINT8(status_reg, IPMIKCS), - VMSTATE_UINT8(data_out_reg, IPMIKCS), - VMSTATE_INT16(data_in_reg, IPMIKCS), - VMSTATE_INT16(cmd_reg, IPMIKCS), - VMSTATE_UINT8(waiting_rsp, IPMIKCS), - VMSTATE_END_OF_LIST() - } -}; - static const VMStateDescription vmstate_ISAIPMIKCSDevice = { .name = TYPE_IPMI_INTERFACE, .version_id = 2, @@ -531,6 +155,7 @@ static void isa_ipmi_kcs_class_init(ObjectClass *oc, void *data) iic->get_backend_data = isa_ipmi_kcs_get_backend_data; ipmi_kcs_class_init(iic); + iic->get_fwinfo = isa_ipmi_kcs_get_fwinfo; } static const TypeInfo isa_ipmi_kcs_info = { |