Re: [Qemu-devel] [PATCH 14/17] ipmi: Add SMBIOS table entry

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Apr 23, 2015 at 05:57:55PM -0500, minyard@acm.org wrote:
> From: Corey Minyard <cminyard@mvista.com>
> 
> Add an IPMI table entry to the SMBIOS.
> 
> Signed-off-by: Corey Minyard <cminyard@mvista.com>

Acked-by: Michael S. Tsirkin <mst@redhat.com>

> ---
>  default-configs/i386-softmmu.mak   |  1 +
>  default-configs/x86_64-softmmu.mak |  1 +
>  hw/ipmi/Makefile.objs              |  1 +
>  hw/ipmi/ipmi_smbios.c              | 89 ++++++++++++++++++++++++++++++++++++++
>  4 files changed, 92 insertions(+)
>  create mode 100644 hw/ipmi/ipmi_smbios.c
> 
> diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak
> index 2448543..15c0b70 100644
> --- a/default-configs/i386-softmmu.mak
> +++ b/default-configs/i386-softmmu.mak
> @@ -20,6 +20,7 @@ CONFIG_I8254=y
>  CONFIG_PCSPK=y
>  CONFIG_PCKBD=y
>  CONFIG_FDC=y
> +CONFIG_SMBIOS=y
>  CONFIG_ACPI=y
>  CONFIG_APM=y
>  CONFIG_I8257=y
> diff --git a/default-configs/x86_64-softmmu.mak b/default-configs/x86_64-softmmu.mak
> index 3ed8877..dac877a 100644
> --- a/default-configs/x86_64-softmmu.mak
> +++ b/default-configs/x86_64-softmmu.mak
> @@ -20,6 +20,7 @@ CONFIG_I8254=y
>  CONFIG_PCSPK=y
>  CONFIG_PCKBD=y
>  CONFIG_FDC=y
> +CONFIG_SMBIOS=y
>  CONFIG_ACPI=y
>  CONFIG_APM=y
>  CONFIG_I8257=y
> diff --git a/hw/ipmi/Makefile.objs b/hw/ipmi/Makefile.objs
> index abfa827..d0129cf 100644
> --- a/hw/ipmi/Makefile.objs
> +++ b/hw/ipmi/Makefile.objs
> @@ -4,3 +4,4 @@ common-obj-$(CONFIG_IPMI_KCS) += ipmi_kcs.o
>  common-obj-$(CONFIG_IPMI_BT) += ipmi_bt.o
>  common-obj-$(CONFIG_IPMI_LOCAL) += ipmi_sim.o
>  common-obj-$(CONFIG_IPMI_EXTERN) += ipmi_extern.o
> +common-obj-$(call land,$(CONFIG_IPMI),$(CONFIG_SMBIOS)) += ipmi_smbios.o
> diff --git a/hw/ipmi/ipmi_smbios.c b/hw/ipmi/ipmi_smbios.c
> new file mode 100644
> index 0000000..b818f5b
> --- /dev/null
> +++ b/hw/ipmi/ipmi_smbios.c
> @@ -0,0 +1,89 @@
> +/*
> + * IPMI SMBIOS firmware handling
> + *
> + * 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 "ipmi.h"
> +#include <hw/i386/smbios.h>
> +#include <qemu/error-report.h>
> +
> +/* SMBIOS type 38 - IPMI */
> +struct smbios_type_38 {
> +    struct smbios_structure_header header;
> +    uint8_t interface_type;
> +    uint8_t ipmi_spec_revision;
> +    uint8_t i2c_slave_address;
> +    uint8_t nv_storage_device_address;
> +    uint64_t base_address;
> +    uint8_t base_address_modifier;
> +    uint8_t interrupt_number;
> +} QEMU_PACKED;
> +
> +static void ipmi_encode_one_smbios(IPMIFwInfo *info, void *opaque)
> +{
> +    struct smbios_type_38 smb38;
> +    uint64_t baseaddr = info->base_address;
> +
> +    smb38.header.type = 38;
> +    smb38.header.length = sizeof(smb38);
> +    smb38.header.handle = cpu_to_le16(0x3000);
> +    smb38.interface_type = info->interface_type;
> +    smb38.ipmi_spec_revision = ((info->ipmi_spec_major_revision << 4)
> +                                | info->ipmi_spec_minor_revision);
> +    smb38.i2c_slave_address = info->i2c_slave_address;
> +    smb38.nv_storage_device_address = 0;
> +
> +    /* or 1 to set it to I/O space */
> +    switch (info->memspace) {
> +    case IPMI_MEMSPACE_IO: baseaddr |= 1; break;
> +    case IPMI_MEMSPACE_MEM32: break;
> +    case IPMI_MEMSPACE_MEM64: break;
> +    case IPMI_MEMSPACE_SMBUS: baseaddr <<= 1; break;
> +    }
> +
> +    smb38.base_address = cpu_to_le64(baseaddr);
> +    
> +    smb38.base_address_modifier = 0;
> +    if (info->irq_type == IPMI_LEVEL_IRQ) {
> +        smb38.base_address_modifier |= 1;
> +    }
> +    switch (info->register_spacing) {
> +    case 1: break;
> +    case 4: smb38.base_address_modifier |= 1 << 6; break;
> +    case 16: smb38.base_address_modifier |= 2 << 6; break;
> +    default:
> +        error_report("IPMI register spacing %d is not compatible with"
> +                     " SMBIOS, ignoring this entry.", info->register_spacing);
> +        return;
> +    }
> +    smb38.interrupt_number = info->interrupt_number;
> +
> +    smbios_add_table_entry((struct smbios_structure_header *) &smb38,
> +                           sizeof(smb38), true);
> +}
> +
> +static void smbios_init(void)
> +{
> +    ipmi_register_fwinfo_handler(ipmi_encode_one_smbios, NULL);
> +}
> +
> +type_init(smbios_init);
> -- 
> 1.8.3.1
>