On 10/25/2018 02:37 PM, Michael Mueller wrote:
> This patch implements the Set Guest Information Block operation
> to request association or disassociation of a Guest Information
> Block (GIB) with the Adapter Interruption Facility. The operation
> is required to receive GIB alert interrupts for guest adapters
> in conjunction with AIV and GISA.
>
> Signed-off-by: Michael Mueller <mimu@xxxxxxxxxxxxx>
> Reviewed-by: Sebastian Ott <sebott@xxxxxxxxxxxxx>
> Reviewed-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
> Acked-by: Halil Pasic <pasic@xxxxxxxxxxxxx>
Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> ---
> arch/s390/include/asm/cio.h | 1 +
> drivers/s390/cio/chsc.c | 37 +++++++++++++++++++++++++++++++++++++
> drivers/s390/cio/chsc.h | 1 +
> 3 files changed, 39 insertions(+)
>
> diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h
> index 225667652069..1727180e8ca1 100644
> --- a/arch/s390/include/asm/cio.h
> +++ b/arch/s390/include/asm/cio.h
> @@ -331,5 +331,6 @@ extern void css_schedule_reprobe(void);
> /* Function from drivers/s390/cio/chsc.c */
> int chsc_sstpc(void *page, unsigned int op, u16 ctrl, u64 *clock_delta);
> int chsc_sstpi(void *page, void *result, size_t size);
> +int chsc_sgib(u32 origin);
>
> #endif
> diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
> index a0baee25134c..4159c63a5fd2 100644
> --- a/drivers/s390/cio/chsc.c
> +++ b/drivers/s390/cio/chsc.c
> @@ -1382,3 +1382,40 @@ int chsc_pnso_brinfo(struct subchannel_id schid,
> return chsc_error_from_response(brinfo_area->response.code);
> }
> EXPORT_SYMBOL_GPL(chsc_pnso_brinfo);
> +
> +int chsc_sgib(u32 origin)
> +{
> + struct {
> + struct chsc_header request;
> + u16 op;
> + u8 reserved01[2];
> + u8 reserved02:4;
> + u8 fmt:4;
> + u8 reserved03[7];
> + /* operation data area begin */
> + u8 reserved04[4];
> + u32 gib_origin;
> + u8 reserved05[10];
> + u8 aix;
> + u8 reserved06[4029];
> + struct chsc_header response;
> + u8 reserved07[4];
> + } *sgib_area;
> + int ret;
> +
> + spin_lock_irq(&chsc_page_lock);
> + memset(chsc_page, 0, PAGE_SIZE);
> + sgib_area = chsc_page;
> + sgib_area->request.length = 0x0fe0;
> + sgib_area->request.code = 0x0021;
> + sgib_area->op = 0x1;
> + sgib_area->gib_origin = origin;
> +
> + ret = chsc(sgib_area);
> + if (ret == 0)
> + ret = chsc_error_from_response(sgib_area->response.code);
> + spin_unlock_irq(&chsc_page_lock);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(chsc_sgib);
> diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
> index 78aba8d94eec..e57d68e325a3 100644
> --- a/drivers/s390/cio/chsc.h
> +++ b/drivers/s390/cio/chsc.h
> @@ -164,6 +164,7 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp);
> int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
> int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
> u64 summary_indicator_addr, u64 subchannel_indicator_addr);
> +int chsc_sgib(u32 origin);
> int chsc_error_from_response(int response);
>
> int chsc_siosl(struct subchannel_id schid);
>
