From f87dae18d8675f8fef7b34e713d3951fb594d5be Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Mon, 25 Nov 2019 07:58:02 +0100 Subject: ppc/xive: Implement the XivePresenter interface MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Each XIVE Router model, sPAPR and PowerNV, now implements the 'match_nvt' handler of the XivePresenter QOM interface. This is simply moving code and taking into account the new API. To be noted that the xive_router_get_tctx() helper is not used anymore when doing CAM matching and will be removed later on after other changes. The XIVE presenter model is still too simple for the PowerNV machine and the CAM matching algo is not correct on multichip system. Subsequent patches will introduce more changes to scan all chips of the system. Signed-off-by: Cédric Le Goater Reviewed-by: Greg Kurz Signed-off-by: Cédric Le Goater Message-Id: <20191125065820.927-3-clg@kaod.org> Signed-off-by: David Gibson --- hw/intc/pnv_xive.c | 41 +++++++++++++++++++++++++++++++++++++++++ hw/intc/spapr_xive.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ hw/intc/xive.c | 51 +++++++-------------------------------------------- 3 files changed, 97 insertions(+), 44 deletions(-) (limited to 'hw/intc') diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c index 9a771f6..8055de8 100644 --- a/hw/intc/pnv_xive.c +++ b/hw/intc/pnv_xive.c @@ -372,6 +372,45 @@ static int pnv_xive_get_eas(XiveRouter *xrtr, uint8_t blk, uint32_t idx, return pnv_xive_vst_read(xive, VST_TSEL_IVT, blk, idx, eas); } +static int pnv_xive_match_nvt(XivePresenter *xptr, uint8_t format, + uint8_t nvt_blk, uint32_t nvt_idx, + bool cam_ignore, uint8_t priority, + uint32_t logic_serv, XiveTCTXMatch *match) +{ + CPUState *cs; + int count = 0; + + CPU_FOREACH(cs) { + PowerPCCPU *cpu = POWERPC_CPU(cs); + XiveTCTX *tctx = XIVE_TCTX(pnv_cpu_state(cpu)->intc); + int ring; + + /* + * Check the thread context CAM lines and record matches. + */ + ring = xive_presenter_tctx_match(xptr, tctx, format, nvt_blk, nvt_idx, + cam_ignore, logic_serv); + /* + * Save the context and follow on to catch duplicates, that we + * don't support yet. + */ + if (ring != -1) { + if (match->tctx) { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: already found a " + "thread context NVT %x/%x\n", + nvt_blk, nvt_idx); + return -1; + } + + match->ring = ring; + match->tctx = tctx; + count++; + } + } + + return count; +} + static XiveTCTX *pnv_xive_get_tctx(XiveRouter *xrtr, CPUState *cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); @@ -1780,6 +1819,7 @@ static void pnv_xive_class_init(ObjectClass *klass, void *data) PnvXScomInterfaceClass *xdc = PNV_XSCOM_INTERFACE_CLASS(klass); XiveRouterClass *xrc = XIVE_ROUTER_CLASS(klass); XiveNotifierClass *xnc = XIVE_NOTIFIER_CLASS(klass); + XivePresenterClass *xpc = XIVE_PRESENTER_CLASS(klass); xdc->dt_xscom = pnv_xive_dt_xscom; @@ -1795,6 +1835,7 @@ static void pnv_xive_class_init(ObjectClass *klass, void *data) xrc->get_tctx = pnv_xive_get_tctx; xnc->notify = pnv_xive_notify; + xpc->match_nvt = pnv_xive_match_nvt; }; static const TypeInfo pnv_xive_info = { diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index 729246e..bb3b2df 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -405,6 +405,52 @@ static XiveTCTX *spapr_xive_get_tctx(XiveRouter *xrtr, CPUState *cs) return spapr_cpu_state(cpu)->tctx; } +static int spapr_xive_match_nvt(XivePresenter *xptr, uint8_t format, + uint8_t nvt_blk, uint32_t nvt_idx, + bool cam_ignore, uint8_t priority, + uint32_t logic_serv, XiveTCTXMatch *match) +{ + CPUState *cs; + int count = 0; + + CPU_FOREACH(cs) { + PowerPCCPU *cpu = POWERPC_CPU(cs); + XiveTCTX *tctx = spapr_cpu_state(cpu)->tctx; + int ring; + + /* + * Skip partially initialized vCPUs. This can happen when + * vCPUs are hotplugged. + */ + if (!tctx) { + continue; + } + + /* + * Check the thread context CAM lines and record matches. + */ + ring = xive_presenter_tctx_match(xptr, tctx, format, nvt_blk, nvt_idx, + cam_ignore, logic_serv); + /* + * Save the matching thread interrupt context and follow on to + * check for duplicates which are invalid. + */ + if (ring != -1) { + if (match->tctx) { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: already found a thread " + "context NVT %x/%x\n", nvt_blk, nvt_idx); + return -1; + } + + match->ring = ring; + match->tctx = tctx; + count++; + } + } + + return count; +} + static const VMStateDescription vmstate_spapr_xive_end = { .name = TYPE_SPAPR_XIVE "/end", .version_id = 1, @@ -684,6 +730,7 @@ static void spapr_xive_class_init(ObjectClass *klass, void *data) DeviceClass *dc = DEVICE_CLASS(klass); XiveRouterClass *xrc = XIVE_ROUTER_CLASS(klass); SpaprInterruptControllerClass *sicc = SPAPR_INTC_CLASS(klass); + XivePresenterClass *xpc = XIVE_PRESENTER_CLASS(klass); dc->desc = "sPAPR XIVE Interrupt Controller"; dc->props = spapr_xive_properties; @@ -708,6 +755,8 @@ static void spapr_xive_class_init(ObjectClass *klass, void *data) sicc->print_info = spapr_xive_print_info; sicc->dt = spapr_xive_dt; sicc->post_load = spapr_xive_post_load; + + xpc->match_nvt = spapr_xive_match_nvt; } static const TypeInfo spapr_xive_info = { diff --git a/hw/intc/xive.c b/hw/intc/xive.c index 344bb3f..da6196c 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -1428,51 +1428,14 @@ static bool xive_presenter_match(XiveRouter *xrtr, uint8_t format, bool cam_ignore, uint8_t priority, uint32_t logic_serv, XiveTCTXMatch *match) { - CPUState *cs; + XivePresenter *xptr = XIVE_PRESENTER(xrtr); + XivePresenterClass *xpc = XIVE_PRESENTER_GET_CLASS(xptr); + int count; - /* - * TODO (PowerNV): handle chip_id overwrite of block field for - * hardwired CAM compares - */ - - CPU_FOREACH(cs) { - XiveTCTX *tctx = xive_router_get_tctx(xrtr, cs); - int ring; - - /* - * Skip partially initialized vCPUs. This can happen when - * vCPUs are hotplugged. - */ - if (!tctx) { - continue; - } - - /* - * HW checks that the CPU is enabled in the Physical Thread - * Enable Register (PTER). - */ - - /* - * Check the thread context CAM lines and record matches. We - * will handle CPU exception delivery later - */ - ring = xive_presenter_tctx_match(XIVE_PRESENTER(xrtr), tctx, format, - nvt_blk, nvt_idx, - cam_ignore, logic_serv); - /* - * Save the context and follow on to catch duplicates, that we - * don't support yet. - */ - if (ring != -1) { - if (match->tctx) { - qemu_log_mask(LOG_GUEST_ERROR, "XIVE: already found a thread " - "context NVT %x/%x\n", nvt_blk, nvt_idx); - return false; - } - - match->ring = ring; - match->tctx = tctx; - } + count = xpc->match_nvt(xptr, format, nvt_blk, nvt_idx, cam_ignore, + priority, logic_serv, match); + if (count < 0) { + return false; } if (!match->tctx) { -- cgit v1.1