From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36214) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XJXCm-0000fN-55 for qemu-devel@nongnu.org; Mon, 18 Aug 2014 20:23:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XJXCb-0004JY-4W for qemu-devel@nongnu.org; Mon, 18 Aug 2014 20:23:16 -0400 Received: from e39.co.us.ibm.com ([32.97.110.160]:39994) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XJXCa-0004JP-U3 for qemu-devel@nongnu.org; Mon, 18 Aug 2014 20:23:05 -0400 Received: from /spool/local by e39.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 18 Aug 2014 18:23:04 -0600 From: Michael Roth Date: Mon, 18 Aug 2014 19:21:57 -0500 Message-Id: <1408407718-10835-12-git-send-email-mdroth@linux.vnet.ibm.com> In-Reply-To: <1408407718-10835-1-git-send-email-mdroth@linux.vnet.ibm.com> References: <1408407718-10835-1-git-send-email-mdroth@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH 11/12] spapr_events: event-scan RTAS interface List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: aik@ozlabs.ru, agraf@suse.de, ncmike@ncultra.org, qemu-ppc@nongnu.org, tyreld@linux.vnet.ibm.com, nfont@linux.vnet.ibm.com From: Tyrel Datwyler We don't actually rely on this interface to surface hotplug events, and instead rely on the similar-but-interrupt-driven check-exception RTAS interface used for EPOW events. However, the existence of this interface is needed to ensure guest kernels initialize the event-reporting interfaces which will in turn be used by userspace tools to handle these events, so we implement this interface as a stub. Signed-off-by: Tyrel Datwyler Signed-off-by: Michael Roth --- hw/ppc/spapr.c | 1 + hw/ppc/spapr_events.c | 9 +++++++++ include/hw/ppc/spapr.h | 2 ++ 3 files changed, 12 insertions(+) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 825fd31..c65b13a 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -702,6 +702,7 @@ static void *spapr_create_fdt_skel(hwaddr initrd_base, refpoints, sizeof(refpoints)))); _FDT((fdt_property_cell(fdt, "rtas-error-log-max", RTAS_ERROR_LOG_MAX))); + _FDT((fdt_property_cell(fdt, "rtas-event-scan-rate", RTAS_EVENT_SCAN_RATE))); /* * According to PAPR, rtas ibm,os-term, does not gaurantee a return diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c index c0be0e5..bb80080 100644 --- a/hw/ppc/spapr_events.c +++ b/hw/ppc/spapr_events.c @@ -449,6 +449,14 @@ static void check_exception(PowerPCCPU *cpu, sPAPREnvironment *spapr, } } +static void event_scan(PowerPCCPU *cpu, sPAPREnvironment *spapr, + uint32_t token, uint32_t nargs, + target_ulong args, + uint32_t nret, target_ulong rets) +{ + rtas_st(rets, 0, 1); /* no error events found */ +} + void spapr_events_init(sPAPREnvironment *spapr) { spapr->check_exception_irq = xics_alloc(spapr->icp, 0, 0, false); @@ -456,4 +464,5 @@ void spapr_events_init(sPAPREnvironment *spapr) qemu_register_powerdown_notifier(&spapr->epow_notifier); spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", check_exception); + spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); } diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 5382bf1..aab627f 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -484,6 +484,8 @@ int spapr_rtas_device_tree_setup(void *fdt, hwaddr rtas_addr, #define RTAS_ERROR_LOG_MAX 2048 +#define RTAS_EVENT_SCAN_RATE 1 + typedef struct sPAPRTCETable sPAPRTCETable; #define TYPE_SPAPR_TCE_TABLE "spapr-tce-table" -- 1.9.1