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Re: [Qemu-devel] [PATCH v2 04/14] spapr_pci: add set-indicator RTAS inte
From: |
Michael Roth |
Subject: |
Re: [Qemu-devel] [PATCH v2 04/14] spapr_pci: add set-indicator RTAS interface |
Date: |
Thu, 16 Jan 2014 14:54:28 -0600 |
User-agent: |
alot/0.3.4 |
Quoting Alexey Kardashevskiy (2013-12-15 22:26:32)
> On 12/06/2013 09:32 AM, 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 | 93
> > ++++++++++++++++++++++++++++++++++++++++++++++++
> > include/hw/ppc/spapr.h | 28 +++++++++++++++
> > 2 files changed, 121 insertions(+)
> >
> > diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
> > index 7568a03..1046ec8 100644
> > --- a/hw/ppc/spapr_pci.c
> > +++ b/hw/ppc/spapr_pci.c
> > @@ -35,6 +35,16 @@
> >
> > #include "hw/pci/pci_bus.h"
> >
> > +/* #define DEBUG_SPAPR */
> > +
> > +#ifdef DEBUG_SPAPR
> > +#define DPRINTF(fmt, ...) \
> > + do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
> > +#else
> > +#define DPRINTF(fmt, ...) \
> > + do { } while (0)
> > +#endif
> > +
> > /* Copied from the kernel arch/powerpc/platforms/pseries/msi.c */
> > #define RTAS_QUERY_FN 0
> > #define RTAS_CHANGE_FN 1
> > @@ -404,6 +414,80 @@ static void
> > rtas_ibm_query_interrupt_source_number(PowerPCCPU *cpu,
> > rtas_st(rets, 2, 1);/* 0 == level; 1 == edge */
> > }
> >
> > +static void rtas_set_indicator(PowerPCCPU *cpu, sPAPREnvironment *spapr,
> > + uint32_t token, uint32_t nargs,
> > + target_ulong args, uint32_t nret,
> > + target_ulong rets)
> > +{
> > + uint32_t indicator = rtas_ld(args, 0);
> > + uint32_t drc_index = rtas_ld(args, 1);
> > + uint32_t indicator_state = rtas_ld(args, 2);
> > + uint32_t encoded = 0, shift = 0, mask = 0;
> > + uint32_t *pind;
> > + DrcEntry *drc_entry = NULL;
> > +
> > + if (drc_index == 0) { /* platform indicator */
> > + pind = &spapr->state;
> > + } else {
> > + drc_entry = spapr_find_drc_entry(drc_index);
> > + if (!drc_entry) {
> > + DPRINTF("rtas_set_indicator: unable to find drc_entry for %x",
> > + drc_index);
> > + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
> > + return;
> > + }
> > + pind = &drc_entry->state;
> > + }
> > +
> > + switch (indicator) {
> > + 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: /* Allocation State */
> > + shift = INDICATOR_ALLOCATION_SHIFT;
> > + mask = INDICATOR_ALLOCATION_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_set_indicator: indicator not implemented: %d",
> > + indicator);
> > + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
> > + return;
> > + }
> > +
> > + encoded = ENCODE_DRC_STATE(indicator_state, mask, shift);
> > + /* clear the current indicator value */
> > + *pind &= ~mask;
> > + /* set the new value */
> > + *pind |= encoded;
> > + rtas_st(rets, 0, RTAS_OUT_SUCCESS);
> > +}
> > +
> > static int pci_spapr_swizzle(int slot, int pin)
> > {
> > return (slot + pin) % PCI_NUM_PINS;
> > @@ -637,6 +721,14 @@ static int spapr_phb_init(SysBusDevice *s)
> > sphb->lsi_table[i].irq = irq;
> > }
> >
> > + /* make sure the platform EPOW sensor is initialized - the
> > + * guest will probe it when there is a hotplug event.
> > + */
> > + spapr->state &= ~(uint32_t)INDICATOR_EPOW_MASK;
> > + spapr->state |= ENCODE_DRC_STATE(0,
> > + INDICATOR_EPOW_MASK,
> > + INDICATOR_EPOW_SHIFT);
> > +
> > return 0;
> > }
> >
> > @@ -958,6 +1050,7 @@ void spapr_pci_rtas_init(void)
> > rtas_ibm_query_interrupt_source_number);
> > spapr_rtas_register("ibm,change-msi", rtas_ibm_change_msi);
> > }
> > + spapr_rtas_register("set-indicator", rtas_set_indicator);
> > }
> >
> > static void spapr_pci_register_types(void)
> > diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
> > index 6ae5c54..b48c55f 100644
> > --- a/include/hw/ppc/spapr.h
> > +++ b/include/hw/ppc/spapr.h
> > @@ -38,6 +38,9 @@ typedef struct sPAPREnvironment {
> > int htab_save_index;
> > bool htab_first_pass;
> > int htab_fd;
> > +
> > + /* platform state - sensors and indicators */
> > + uint32_t state;
> > } sPAPREnvironment;
> >
> > #define H_SUCCESS 0
> > @@ -334,6 +337,31 @@ DrcEntry *spapr_add_phb_to_drc_table(uint64_t buid,
> > uint32_t state);
> > DrcEntry *spapr_phb_to_drc_entry(uint64_t buid);
> > DrcEntry *spapr_find_drc_entry(int drc_index);
> >
> > +/* For set-indicator RTAS interface */
> > +#define INDICATOR_ISOLATION_MASK 0x0001 /* 9001 one bit */
> > +#define INDICATOR_GLOBAL_INTERRUPT_MASK 0x0002 /* 9005 one bit */
> > +#define INDICATOR_ERROR_LOG_MASK 0x0004 /* 9006 one bit */
> > +#define INDICATOR_IDENTIFY_MASK 0x0008 /* 9007 one bit */
> > +#define INDICATOR_RESET_MASK 0x0010 /* 9009 one bit */
> > +#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_ISOLATION_SHIFT 0x00 /* bit 0 */
> > +#define INDICATOR_GLOBAL_INTERRUPT_SHIFT 0x01 /* bit 1 */
> > +#define INDICATOR_ERROR_LOG_SHIFT 0x02 /* bit 2 */
> > +#define INDICATOR_IDENTIFY_SHIFT 0x03 /* bit 3 */
> > +#define INDICATOR_RESET_SHIFT 0x04 /* bit 4 */
> > +#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 DECODE_DRC_STATE(state, m, s) \
> > + ((((uint32_t)(state) & (uint32_t)(m))) >> (s))
> > +
> > +#define ENCODE_DRC_STATE(val, m, s) \
> > + (((uint32_t)(val) << (s)) & (uint32_t)(m))
> > +
>
>
> Why to put these definitions in the header when they are only used by the
> spapr_pci.c? It gives me the (wrong) idea that these are shared between
> files...
Agreed these should live in spapr_pci.c, will fix.
>
>
>
> > extern sPAPREnvironment *spapr;
> >
> > /*#define DEBUG_SPAPR_HCALLS*/
> >
>
>
> --
> Alexey
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