From patchwork Fri Apr 1 04:15:26 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 89173 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id D3105B6EEC for ; Fri, 1 Apr 2011 15:31:16 +1100 (EST) Received: from localhost ([127.0.0.1]:59771 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q5W0w-0006Uq-2e for incoming@patchwork.ozlabs.org; Fri, 01 Apr 2011 00:31:14 -0400 Received: from [140.186.70.92] (port=39968 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q5VmD-0007A4-OR for qemu-devel@nongnu.org; Fri, 01 Apr 2011 00:16:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q5Vm5-0001Tr-JB for qemu-devel@nongnu.org; Fri, 01 Apr 2011 00:16:01 -0400 Received: from ozlabs.org ([203.10.76.45]:35012) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q5Vm4-0001R5-Tw for qemu-devel@nongnu.org; Fri, 01 Apr 2011 00:15:53 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 7C20E1007E5; Fri, 1 Apr 2011 15:15:44 +1100 (EST) From: David Gibson To: agraf@suse.de, qemu-devel@nongnu.org Date: Fri, 1 Apr 2011 15:15:26 +1100 Message-Id: <1301631334-30795-20-git-send-email-david@gibson.dropbear.id.au> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1301631334-30795-1-git-send-email-david@gibson.dropbear.id.au> References: <1301631334-30795-1-git-send-email-david@gibson.dropbear.id.au> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 203.10.76.45 Cc: paulus@samba.org, anton@samba.org Subject: [Qemu-devel] [PATCH 19/27] Add PAPR H_VIO_SIGNAL hypercall and infrastructure for VIO interrupts X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This patch adds infrastructure to support interrupts from PAPR virtual IO devices. This includes correctly advertising those interrupts in the device tree, and implementing the H_VIO_SIGNAL hypercall, used to enable and disable individual device interrupts. Signed-off-by: David Gibson --- hw/spapr.c | 2 +- hw/spapr_vio.c | 37 +++++++++++++++++++++++++++++++++++++ hw/spapr_vio.h | 6 ++++++ 3 files changed, 44 insertions(+), 1 deletions(-) diff --git a/hw/spapr.c b/hw/spapr.c index b5aefd7..200617b 100644 --- a/hw/spapr.c +++ b/hw/spapr.c @@ -65,7 +65,7 @@ static void *spapr_create_fdt(int *fdt_size, ram_addr_t ramsize, uint32_t start_prop = cpu_to_be32(initrd_base); uint32_t end_prop = cpu_to_be32(initrd_base + initrd_size); uint32_t pft_size_prop[] = {0, cpu_to_be32(hash_shift)}; - char hypertas_prop[] = "hcall-pft\0hcall-term\0hcall-dabr"; + char hypertas_prop[] = "hcall-pft\0hcall-term\0hcall-dabr\0hcall-interrupt"; uint32_t interrupt_server_ranges_prop[] = {0, cpu_to_be32(smp_cpus)}; int i; char *modelname; diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c index 10acb4c..605079c 100644 --- a/hw/spapr_vio.c +++ b/hw/spapr_vio.c @@ -105,6 +105,16 @@ static int vio_make_devnode(VIOsPAPRDevice *dev, } } + if (dev->qirq) { + uint32_t ints_prop[] = {cpu_to_be32(dev->vio_irq_num), 0}; + + ret = fdt_setprop(fdt, node_off, "interrupts", ints_prop, + sizeof(ints_prop)); + if (ret < 0) { + return ret; + } + } + if (info->devnode) { ret = (info->devnode)(dev, fdt, node_off); if (ret < 0) { @@ -140,6 +150,30 @@ void spapr_vio_bus_register_withprop(VIOsPAPRDeviceInfo *info) qdev_register(&info->qdev); } +static target_ulong h_vio_signal(CPUState *env, sPAPREnvironment *spapr, + target_ulong opcode, + target_ulong *args) +{ + target_ulong reg = args[0]; + target_ulong mode = args[1]; + VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); + VIOsPAPRDeviceInfo *info; + + if (!dev) { + return H_PARAMETER; + } + + info = (VIOsPAPRDeviceInfo *)dev->qdev.info; + + if (mode & ~info->signal_mask) { + return H_PARAMETER; + } + + dev->signal_state = mode; + + return H_SUCCESS; +} + VIOsPAPRBus *spapr_vio_bus_init(void) { VIOsPAPRBus *bus; @@ -156,6 +190,9 @@ VIOsPAPRBus *spapr_vio_bus_init(void) qbus = qbus_create(&spapr_vio_bus_info, dev, "spapr-vio"); bus = DO_UPCAST(VIOsPAPRBus, bus, qbus); + /* hcall-vio */ + spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal); + for (qinfo = device_info_list; qinfo; qinfo = qinfo->next) { VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; diff --git a/hw/spapr_vio.h b/hw/spapr_vio.h index b164ad3..8a000c6 100644 --- a/hw/spapr_vio.h +++ b/hw/spapr_vio.h @@ -24,6 +24,9 @@ typedef struct VIOsPAPRDevice { DeviceState qdev; uint32_t reg; + qemu_irq qirq; + uint32_t vio_irq_num; + target_ulong signal_state; } VIOsPAPRDevice; typedef struct VIOsPAPRBus { @@ -33,6 +36,7 @@ typedef struct VIOsPAPRBus { typedef struct { DeviceInfo qdev; const char *dt_name, *dt_type, *dt_compatible; + target_ulong signal_mask; int (*init)(VIOsPAPRDevice *dev); void (*hcalls)(VIOsPAPRBus *bus); int (*devnode)(VIOsPAPRDevice *dev, void *fdt, int node_off); @@ -43,6 +47,8 @@ extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg); extern void spapr_vio_bus_register_withprop(VIOsPAPRDeviceInfo *info); extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt); +extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode); + void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len); void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, CharDriverState *chardev);