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Re: [Qemu-ppc] [Qemu-devel] [PATCH 06/12] spapr_pci: add get-sensor-stat
From: |
Tyrel Datwyler |
Subject: |
Re: [Qemu-ppc] [Qemu-devel] [PATCH 06/12] spapr_pci: add get-sensor-state RTAS interface |
Date: |
Thu, 04 Sep 2014 17:34:53 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.7.0 |
On 08/18/2014 05:21 PM, Michael Roth wrote:
> From: Mike Day <address@hidden>
>
> Signed-off-by: Mike Day <address@hidden>
> Signed-off-by: Michael Roth <address@hidden>
> ---
> hw/ppc/spapr_pci.c | 76
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 76 insertions(+)
>
> diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
> index f007dd6..8d1351d 100644
> --- a/hw/ppc/spapr_pci.c
> +++ b/hw/ppc/spapr_pci.c
> @@ -66,6 +66,7 @@
> #define INDICATOR_DR_MASK 0x00e0 /* 9002 three bits */
> #define INDICATOR_ALLOCATION_MASK 0x0300 /* 9003 two bits */
> #define INDICATOR_EPOW_MASK 0x1c00 /* 9 three bits */
> +#define INDICATOR_ENTITY_SENSE_MASK 0xe000 /* 9003 three bits */
>
> #define INDICATOR_ISOLATION_SHIFT 0x00 /* bit 0 */
> #define INDICATOR_GLOBAL_INTERRUPT_SHIFT 0x01 /* bit 1 */
> @@ -75,6 +76,10 @@
> #define INDICATOR_DR_SHIFT 0x05 /* bits 5-7 */
> #define INDICATOR_ALLOCATION_SHIFT 0x08 /* bits 8-9 */
> #define INDICATOR_EPOW_SHIFT 0x0a /* bits 10-12 */
> +#define INDICATOR_ENTITY_SENSE_SHIFT 0x0d /* bits 13-15 */
> +
> +#define INDICATOR_ENTITY_SENSE_EMPTY 0
> +#define INDICATOR_ENTITY_SENSE_PRESENT 1
Need a define for the unusable state for the dr-entity-sensor per PAPR
13.5.3.3.
#define INDICATOR_ENTITY_SENSE_UNUSABLE 2
-Tyrel
>
> #define DECODE_DRC_STATE(state, m, s) \
> ((((uint32_t)(state) & (uint32_t)(m))) >> (s))
> @@ -532,6 +537,75 @@ static void rtas_get_power_level(PowerPCCPU *cpu,
> sPAPREnvironment *spapr,
> rtas_st(rets, 1, 100);
> }
>
> +static void rtas_get_sensor_state(PowerPCCPU *cpu, sPAPREnvironment *spapr,
> + uint32_t token, uint32_t nargs,
> + target_ulong args, uint32_t nret,
> + target_ulong rets)
> +{
> + uint32_t sensor = rtas_ld(args, 0);
> + uint32_t drc_index = rtas_ld(args, 1);
> + uint32_t sensor_state = 0, decoded = 0;
> + uint32_t shift = 0, mask = 0;
> + sPAPRDrcEntry *drc_entry = NULL;
> +
> + if (drc_index == 0) { /* platform state sensor/indicator */
> + sensor_state = spapr->state;
> + } else { /* we should have a drc entry */
> + drc_entry = spapr_find_drc_entry(drc_index);
> + if (!drc_entry) {
> + DPRINTF("unable to find DRC entry for index %x", drc_index);
> + sensor_state = 0; /* empty */
> + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
> + return;
> + }
> + sensor_state = drc_entry->state;
> + }
> + switch (sensor) {
> + case 9: /* EPOW */
> + shift = INDICATOR_EPOW_SHIFT;
> + mask = INDICATOR_EPOW_MASK;
> + break;
> + case 9001: /* Isolation state */
> + /* encode the new value into the correct bit field */
> + shift = INDICATOR_ISOLATION_SHIFT;
> + mask = INDICATOR_ISOLATION_MASK;
> + break;
> + case 9002: /* DR */
> + shift = INDICATOR_DR_SHIFT;
> + mask = INDICATOR_DR_MASK;
> + break;
> + case 9003: /* entity sense */
> + shift = INDICATOR_ENTITY_SENSE_SHIFT;
> + mask = INDICATOR_ENTITY_SENSE_MASK;
> + break;
> + case 9005: /* global interrupt */
> + shift = INDICATOR_GLOBAL_INTERRUPT_SHIFT;
> + mask = INDICATOR_GLOBAL_INTERRUPT_MASK;
> + break;
> + case 9006: /* error log */
> + shift = INDICATOR_ERROR_LOG_SHIFT;
> + mask = INDICATOR_ERROR_LOG_MASK;
> + break;
> + case 9007: /* identify */
> + shift = INDICATOR_IDENTIFY_SHIFT;
> + mask = INDICATOR_IDENTIFY_MASK;
> + break;
> + case 9009: /* reset */
> + shift = INDICATOR_RESET_SHIFT;
> + mask = INDICATOR_RESET_MASK;
> + break;
> + default:
> + DPRINTF("rtas_get_sensor_state: sensor not implemented: %d",
> + sensor);
> + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
> + return;
> + }
> +
> + decoded = DECODE_DRC_STATE(sensor_state, mask, shift);
> + rtas_st(rets, 0, RTAS_OUT_SUCCESS);
> + rtas_st(rets, 1, decoded);
> +}
> +
> static int pci_spapr_swizzle(int slot, int pin)
> {
> return (slot + pin) % PCI_NUM_PINS;
> @@ -1200,6 +1274,8 @@ void spapr_pci_rtas_init(void)
> rtas_set_power_level);
> spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level",
> rtas_get_power_level);
> + spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state",
> + rtas_get_sensor_state);
> }
>
> static void spapr_pci_register_types(void)
>
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Tyrel Datwyler <=