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Re: [Qemu-ppc] [PATCH 16/21] ppc/pnv: generate an OEM SEL event on shutd
From: |
David Gibson |
Subject: |
Re: [Qemu-ppc] [PATCH 16/21] ppc/pnv: generate an OEM SEL event on shutdown |
Date: |
Mon, 10 Apr 2017 15:32:22 +1000 |
User-agent: |
Mutt/1.8.0 (2017-02-23) |
On Wed, Apr 05, 2017 at 02:41:41PM +0200, Cédric Le Goater wrote:
> OpenPOWER systems expect to be notified with such an event before a
> shutdown or a reboot. An OEM SEL message is sent with specific
> identifiers and a user data containing the request : OFF or REBOOT.
>
> Signed-off-by: Cédric Le Goater <address@hidden>
Reviewed-by: David Gibson <address@hidden>
> ---
> hw/ppc/pnv.c | 14 ++++++++++++++
> hw/ppc/pnv_bmc.c | 42 ++++++++++++++++++++++++++++++++++++++++++
> include/hw/ppc/pnv.h | 3 +++
> 3 files changed, 59 insertions(+)
>
> diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
> index c7caecad0aa6..df0a88c3e252 100644
> --- a/hw/ppc/pnv.c
> +++ b/hw/ppc/pnv.c
> @@ -467,6 +467,15 @@ static void *powernv_create_fdt(MachineState *machine)
> return fdt;
> }
>
> +static void pnv_powerdown_notify(Notifier *n, void *opaque)
> +{
> + PnvMachineState *pnv = POWERNV_MACHINE(qdev_get_machine());
> +
> + if (pnv->bmc) {
> + pnv_bmc_powerdown(pnv->bmc);
> + }
> +}
> +
> static void ppc_powernv_reset(void)
> {
> MachineState *machine = MACHINE(qdev_get_machine());
> @@ -662,6 +671,11 @@ static void ppc_powernv_init(MachineState *machine)
>
> /* Create an RTC ISA device too */
> rtc_init(pnv->isa_bus, 2000, NULL);
> +
> + /* OpenPOWER systems use a IPMI SEL Event message to notify the
> + * host to powerdown */
> + pnv->powerdown_notifier.notify = pnv_powerdown_notify;
> + qemu_register_powerdown_notifier(&pnv->powerdown_notifier);
> }
>
> /*
> diff --git a/hw/ppc/pnv_bmc.c b/hw/ppc/pnv_bmc.c
> index 2998530dc4c0..d9ed774acbac 100644
> --- a/hw/ppc/pnv_bmc.c
> +++ b/hw/ppc/pnv_bmc.c
> @@ -32,6 +32,48 @@
> /* TODO: include definition in ipmi.h */
> #define IPMI_SDR_FULL_TYPE 1
>
> +/*
> + * OEM SEL Event data packet sent by BMC in response of a Read Event
> + * Message Buffer command
> + */
> +typedef struct OemSel {
> + /* SEL header */
> + uint8_t id[2];
> + uint8_t type;
> + uint8_t timestamp[4];
> + uint8_t manuf_id[3];
> +
> + /* OEM SEL data (6 bytes) follows */
> + uint8_t netfun;
> + uint8_t cmd;
> + uint8_t data[4];
> +} OemSel;
> +
> +#define SOFT_OFF 0x00
> +#define SOFT_REBOOT 0x01
> +
> +static void pnv_gen_oem_sel(Object *obj, uint8_t reboot)
> +{
> + /* IPMI SEL Event are 16 bytes long */
> + OemSel sel = {
> + .id = { 0x55 , 0x55 },
> + .type = 0xC0, /* OEM */
> + .manuf_id = { 0x0, 0x0, 0x0 },
> + .timestamp = { 0x0, 0x0, 0x0, 0x0 },
> + .netfun = 0x3A, /* IBM */
> + .cmd = 0x04, /* AMI OEM SEL Power Notification */
> + .data = { reboot, 0xFF, 0xFF, 0xFF },
> + };
> +
> + ipmi_bmc_gen_event(IPMI_BMC(obj), (uint8_t *) &sel,
> + 0 /* do not log the event */);
> +}
> +
> +void pnv_bmc_powerdown(Object *obj)
> +{
> + pnv_gen_oem_sel(obj, SOFT_OFF);
> +}
> +
> void pnv_bmc_populate_sensors(Object *bmc, void *fdt)
> {
> int offset;
> diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
> index 050763f6cf54..b70a13bd4175 100644
> --- a/include/hw/ppc/pnv.h
> +++ b/include/hw/ppc/pnv.h
> @@ -132,6 +132,8 @@ typedef struct PnvMachineState {
> uint32_t cpld_irqstate;
>
> Object *bmc;
> +
> + Notifier powerdown_notifier;
> } PnvMachineState;
>
> #define PNV_FDT_ADDR 0x01000000
> @@ -141,6 +143,7 @@ typedef struct PnvMachineState {
> * BMC helpers
> */
> void pnv_bmc_populate_sensors(Object *objbmc, void *fdt);
> +void pnv_bmc_powerdown(Object *objbmc);
>
> /*
> * POWER8 MMIO base addresses
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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- [Qemu-ppc] [PATCH 12/21] ppc/pnv: populate device tree for RTC devices, (continued)
- [Qemu-ppc] [PATCH 12/21] ppc/pnv: populate device tree for RTC devices, Cédric Le Goater, 2017/04/05
- [Qemu-ppc] [PATCH 13/21] ppc/pnv: populate device tree for serial devices, Cédric Le Goater, 2017/04/05
- [Qemu-ppc] [PATCH 14/21] ppc/pnv: populate device tree for IPMI BT devices, Cédric Le Goater, 2017/04/05
- [Qemu-ppc] [PATCH 15/21] ppc/pnv: add initial IPMI sensors for the BMC simulator, Cédric Le Goater, 2017/04/05
- [Qemu-ppc] [PATCH 16/21] ppc/pnv: generate an OEM SEL event on shutdown, Cédric Le Goater, 2017/04/05
- Re: [Qemu-ppc] [PATCH 16/21] ppc/pnv: generate an OEM SEL event on shutdown,
David Gibson <=
- [Qemu-ppc] [PATCH 17/21] qdev: Add a hook for a bus to device if it can add devices, Cédric Le Goater, 2017/04/05
- [Qemu-ppc] [PATCH 18/21] pci: Use the new pci_can_add_device() to enforce devfn_min/max, Cédric Le Goater, 2017/04/05
- [Qemu-ppc] [PATCH 19/21] pci: Don't call pci_irq_handler() for a negative intx, Cédric Le Goater, 2017/04/05
- [Qemu-ppc] [PATCH 21/21] ppc/pnv: Create a default PCI layout, Cédric Le Goater, 2017/04/05