Re: [Qemu-devel] [PATCH 5/8] ipmi: add ACPI power and GUID commands

[Marcel Apfelbaum <marcel.apfelbaum@gmail.com>]

On 01/05/2016 07:29 PM, Cédric Le Goater wrote:
> Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
> ---
>   hw/ipmi/ipmi_bmc_sim.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 55 insertions(+)
>
> diff --git a/hw/ipmi/ipmi_bmc_sim.c b/hw/ipmi/ipmi_bmc_sim.c
> index 60586a67104e..c3a06d0ac7e4 100644
> --- a/hw/ipmi/ipmi_bmc_sim.c
> +++ b/hw/ipmi/ipmi_bmc_sim.c
> @@ -25,6 +25,7 @@
>   #include <stdio.h>
>   #include <string.h>
>   #include <stdint.h>
> +#include "sysemu/sysemu.h"
>   #include "qemu/timer.h"
>   #include "hw/ipmi/ipmi.h"
>   #include "qemu/error-report.h"
> @@ -54,6 +55,9 @@
>   #define IPMI_CMD_GET_DEVICE_ID            0x01
>   #define IPMI_CMD_COLD_RESET               0x02
>   #define IPMI_CMD_WARM_RESET               0x03
> +#define IPMI_CMD_SET_POWER_STATE          0x06
> +#define IPMI_CMD_GET_POWER_STATE          0x07
> +#define IPMI_CMD_GET_DEVICE_GUID          0x08
>   #define IPMI_CMD_RESET_WATCHDOG_TIMER     0x22
>   #define IPMI_CMD_SET_WATCHDOG_TIMER       0x24
>   #define IPMI_CMD_GET_WATCHDOG_TIMER       0x25
> @@ -215,6 +219,9 @@ struct IPMIBmcSim {
>
>       uint8_t restart_cause;
>
> +    uint8_t power_state[2];
> +    uint8_t uuid[16];
> +
>       IPMISel sel;
>       IPMISdr sdr;
>       IPMIFru fru;
> @@ -842,6 +849,42 @@ static void warm_reset(IPMIBmcSim *ibs,
>           k->reset(s, false);
>       }
>   }
> +static void set_power_state(IPMIBmcSim *ibs,
> +                          uint8_t *cmd, unsigned int cmd_len,
> +                          uint8_t *rsp, unsigned int *rsp_len,
> +                          unsigned int max_rsp_len)
> +{
> +    IPMI_CHECK_CMD_LEN(4);
> +    ibs->power_state[0] = cmd[2];
> +    ibs->power_state[1] = cmd[3];
> + out:
> +    return;


Hi,

I am sorry for my late comment, but I find a little strange the use of
the "out" label here.
I understand this is because of its usage in IPMI_*  macros, but
I looked into every usage(I hope I didn't miss anything) and the code
simply returns.
Also the correlation between those macros is a little odd.

Thanks,
Marcel


> +}
> +
> +static void get_power_state(IPMIBmcSim *ibs,
> +                          uint8_t *cmd, unsigned int cmd_len,
> +                          uint8_t *rsp, unsigned int *rsp_len,
> +                          unsigned int max_rsp_len)
> +{
> +    IPMI_ADD_RSP_DATA(ibs->power_state[0]);
> +    IPMI_ADD_RSP_DATA(ibs->power_state[1]);
> + out:
> +    return;
> +}
> +
> +static void get_device_guid(IPMIBmcSim *ibs,
> +                          uint8_t *cmd, unsigned int cmd_len,
> +                          uint8_t *rsp, unsigned int *rsp_len,
> +                          unsigned int max_rsp_len)
> +{
> +    unsigned int i;
> +
> +    for (i = 0; i < 16; i++) {
> +        IPMI_ADD_RSP_DATA(ibs->uuid[i]);
> +    }
> + out:
> +    return;
> +}
>
>   static void set_bmc_global_enables(IPMIBmcSim *ibs,
>                                      uint8_t *cmd, unsigned int cmd_len,
> @@ -1781,6 +1824,9 @@ static const IPMICmdHandler app_cmds[IPMI_NETFN_APP_MAXCMD] = {
>       [IPMI_CMD_GET_DEVICE_ID] = get_device_id,
>       [IPMI_CMD_COLD_RESET] = cold_reset,
>       [IPMI_CMD_WARM_RESET] = warm_reset,
> +    [IPMI_CMD_SET_POWER_STATE] = set_power_state,
> +    [IPMI_CMD_GET_POWER_STATE] = get_power_state,
> +    [IPMI_CMD_GET_DEVICE_GUID] = get_device_guid,
>       [IPMI_CMD_SET_BMC_GLOBAL_ENABLES] = set_bmc_global_enables,
>       [IPMI_CMD_GET_BMC_GLOBAL_ENABLES] = get_bmc_global_enables,
>       [IPMI_CMD_CLR_MSG_FLAGS] = clr_msg_flags,
> @@ -1907,6 +1953,15 @@ static void ipmi_sim_init(Object *obj)
>           i += len;
>       }
>
> +    ibs->power_state[0] = 0;
> +    ibs->power_state[1] = 0;
> +
> +    if (qemu_uuid_set) {
> +        memcpy(&ibs->uuid, qemu_uuid, 16);
> +    } else {
> +        memset(&ibs->uuid, 0, 16);
> +    }
> +
>       ipmi_init_sensors_from_sdrs(ibs);
>       register_cmds(ibs);
>
>