From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48002) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VohUN-0004Nb-W1 for qemu-devel@nongnu.org; Thu, 05 Dec 2013 17:33:59 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VohU9-0004BQ-KC for qemu-devel@nongnu.org; Thu, 05 Dec 2013 17:33:43 -0500 Received: from e32.co.us.ibm.com ([32.97.110.150]:32850) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VohU9-0004BH-DX for qemu-devel@nongnu.org; Thu, 05 Dec 2013 17:33:29 -0500 Received: from /spool/local by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 5 Dec 2013 15:33:29 -0700 From: Michael Roth Date: Thu, 5 Dec 2013 16:33:04 -0600 Message-Id: <1386282785-466-14-git-send-email-mdroth@linux.vnet.ibm.com> In-Reply-To: <1386282785-466-1-git-send-email-mdroth@linux.vnet.ibm.com> References: <1386282785-466-1-git-send-email-mdroth@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v2 13/14] 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, paulus@samba.org, tyreld@linux.vnet.ibm.com, nfont@linux.vnet.ibm.com, qemu-ppc@nongnu.org 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 7079e4e..e7a249b 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -643,6 +643,7 @@ 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))); _FDT((fdt_end_node(fdt))); diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c index 9dfdbcf..69211c5 100644 --- a/hw/ppc/spapr_events.c +++ b/hw/ppc/spapr_events.c @@ -453,10 +453,19 @@ 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 = spapr_allocate_msi(0); spapr->epow_notifier.notify = spapr_powerdown_req; qemu_register_powerdown_notifier(&spapr->epow_notifier); spapr_rtas_register("check-exception", check_exception); + spapr_rtas_register("event-scan", event_scan); } diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 9eef2ce..293375b 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -445,6 +445,8 @@ 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" -- 1.7.9.5