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Re: [Qemu-devel] [PATCH 2/8] ipmi: add get and set SENSOR_TYPE commands
From: |
Greg Kurz |
Subject: |
Re: [Qemu-devel] [PATCH 2/8] ipmi: add get and set SENSOR_TYPE commands |
Date: |
Thu, 7 Jan 2016 14:22:26 +0100 |
On Wed, 6 Jan 2016 19:16:27 +0100
Cédric Le Goater <address@hidden> wrote:
> On 01/06/2016 10:55 AM, Greg Kurz wrote:
> > On Tue, 5 Jan 2016 18:29:56 +0100
> > Cédric Le Goater <address@hidden> wrote:
> >
> >> Signed-off-by: Cédric Le Goater <address@hidden>
> >> ---
> >
> > Acked-by: Greg Kurz <address@hidden>
> >
> > Just some minor comments on the form below.
> >
> >
> >> hw/ipmi/ipmi_bmc_sim.c | 51
> >> ++++++++++++++++++++++++++++++++++++++++++++++++--
> >> 1 file changed, 49 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/hw/ipmi/ipmi_bmc_sim.c b/hw/ipmi/ipmi_bmc_sim.c
> >> index 559e1398d669..061db8437479 100644
> >> --- a/hw/ipmi/ipmi_bmc_sim.c
> >> +++ b/hw/ipmi/ipmi_bmc_sim.c
> >> @@ -37,13 +37,15 @@
> >> #define IPMI_CMD_CHASSIS_CONTROL 0x02
> >>
> >> #define IPMI_NETFN_SENSOR_EVENT 0x04
> >> -#define IPMI_NETFN_SENSOR_EVENT_MAXCMD 0x2e
> >> +#define IPMI_NETFN_SENSOR_EVENT_MAXCMD 0x30
> >>
> >
> > Maybe IPMI_NETFN_SENSOR_EVENT_MAXCMD should be defined...
>
Just to clarify: my point is to ensure someone doesn't forget
to bump MAXCMD when adding a new command.
> These are maximums for each IPMI family of commands (netfn). See
> the arrays at the end of the file :
>
> static const IPMICmdHandler *_cmds[*_MAXCMD]
>
> You'll get the idea.
>
I've looked and I have the impression that the *_MAXCMD macros
are not even needed: since the *_cmds[] arrays are static, why
not using ARRAY_SIZE() to set .cmd_nums in the *_netfn structs
instead ?
Maybe something to be done in a followup patch.
> >> #define IPMI_CMD_SET_SENSOR_EVT_ENABLE 0x28
> >> #define IPMI_CMD_GET_SENSOR_EVT_ENABLE 0x29
> >> #define IPMI_CMD_REARM_SENSOR_EVTS 0x2a
> >> #define IPMI_CMD_GET_SENSOR_EVT_STATUS 0x2b
> >> #define IPMI_CMD_GET_SENSOR_READING 0x2d
> >> +#define IPMI_CMD_SET_SENSOR_TYPE 0x2e
> >> +#define IPMI_CMD_GET_SENSOR_TYPE 0x2f
> >>
> >
> > ... here ?
> >
> >> /* #define IPMI_NETFN_APP 0x06 In ipmi.h */
> >> #define IPMI_NETFN_APP_MAXCMD 0x36
> >> @@ -1576,6 +1578,49 @@ static void get_sensor_reading(IPMIBmcSim *ibs,
> >> return;
> >> }
> >>
> >> +static void set_sensor_type(IPMIBmcSim *ibs,
> >> + uint8_t *cmd, unsigned int cmd_len,
> >> + uint8_t *rsp, unsigned int *rsp_len,
> >> + unsigned int max_rsp_len)
> >> +{
> >> + IPMISensor *sens;
> >> +
> >> +
> >> + IPMI_CHECK_CMD_LEN(5);
> >> + if ((cmd[2] > MAX_SENSORS) ||
> >
> > Parenthesis not needed here since > has precedence over ||
> >
> >> + !IPMI_SENSOR_GET_PRESENT(ibs->sensors + cmd[2])) {
> >
> > Indentation ?
>
> OK. I will fix that.
>
> >> + rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT;
> >> + goto out;
> >> + }
> >> + sens = ibs->sensors + cmd[2];
> >> + sens->sensor_type = cmd[3];
> >> + sens->evt_reading_type_code = cmd[4] & 0x7f;
> >
> > So evt_reading_type_code is 7bit ? Maybe worth to
> > introduce a IPMI_SENSOR_TYPE_MASK define.
>
> Yes. there are a few of these in the code.
>
> >> +
> >> + out:
> >> + return;
> >> +}
> >> +
> >> +static void get_sensor_type(IPMIBmcSim *ibs,
> >> + uint8_t *cmd, unsigned int cmd_len,
> >> + uint8_t *rsp, unsigned int *rsp_len,
> >> + unsigned int max_rsp_len)
> >> +{
> >> + IPMISensor *sens;
> >> +
> >> +
> >> + IPMI_CHECK_CMD_LEN(3);
> >> + if ((cmd[2] > MAX_SENSORS) ||
> >> + !IPMI_SENSOR_GET_PRESENT(ibs->sensors + cmd[2])) {
> >
> > Parenthesis and indentation ?
>
> yep. copy & paste :)
>
> Thanks,
>
> C.
>
> >> + rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT;
> >> + goto out;
> >> + }
> >> + sens = ibs->sensors + cmd[2];
> >> + IPMI_ADD_RSP_DATA(sens->sensor_type);
> >> + IPMI_ADD_RSP_DATA(sens->evt_reading_type_code);
> >> + out:
> >> + return;
> >> +}
> >> +
> >> static const IPMICmdHandler chassis_cmds[IPMI_NETFN_CHASSIS_MAXCMD] = {
> >> [IPMI_CMD_GET_CHASSIS_CAPABILITIES] = chassis_capabilities,
> >> [IPMI_CMD_GET_CHASSIS_STATUS] = chassis_status,
> >> @@ -1592,7 +1637,9 @@ sensor_event_cmds[IPMI_NETFN_SENSOR_EVENT_MAXCMD] = {
> >> [IPMI_CMD_GET_SENSOR_EVT_ENABLE] = get_sensor_evt_enable,
> >> [IPMI_CMD_REARM_SENSOR_EVTS] = rearm_sensor_evts,
> >> [IPMI_CMD_GET_SENSOR_EVT_STATUS] = get_sensor_evt_status,
> >> - [IPMI_CMD_GET_SENSOR_READING] = get_sensor_reading
> >> + [IPMI_CMD_GET_SENSOR_READING] = get_sensor_reading,
> >> + [IPMI_CMD_SET_SENSOR_TYPE] = set_sensor_type,
> >> + [IPMI_CMD_GET_SENSOR_TYPE] = get_sensor_type,
> >> };
> >> static const IPMINetfn sensor_event_netfn = {
> >> .cmd_nums = IPMI_NETFN_SENSOR_EVENT_MAXCMD,
> >
>
>