From 157feeadbaec09fe4dca539a24f6f6d327d6eeb6 Mon Sep 17 00:00:00 2001 From: Liu Yu-B13201 Date: Mon, 28 Nov 2011 20:41:18 +0000 Subject: kvm-ppc: halt secondary cpus when guest reset When guest reset, we need to halt secondary cpus until guest kick them. This already works for tcg. The patch add the support for kvm. Signed-off-by: Liu Yu Signed-off-by: Alexander Graf [agraf: remove in-kernel irqchip code] --- hw/ppce500_spin.c | 1 + 1 file changed, 1 insertion(+) (limited to 'hw') diff --git a/hw/ppce500_spin.c b/hw/ppce500_spin.c index df74953..e7b1453 100644 --- a/hw/ppce500_spin.c +++ b/hw/ppce500_spin.c @@ -112,6 +112,7 @@ static void spin_kick(void *data) env->halted = 0; env->exception_index = -1; + env->stopped = 0; qemu_cpu_kick(env); } -- cgit v1.1 From 1fc02533e73ad66f756f07efdf80fa9bef5afbc8 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Mon, 12 Dec 2011 18:24:28 +0000 Subject: pseries: Remove hcalls callback For forgotten historical reasons, PAPR hypercalls for specific virtual IO devices (oh which there are quite a number) are registered via a callback in the VIOsPAPRDeviceInfo structure. This is kind of ugly, so this patch instead registers hypercalls from device_init() functions for each device type. This works just as well, and is cleaner. Signed-off-by: David Gibson Signed-off-by: Alexander Graf --- hw/spapr_llan.c | 17 ++++++----------- hw/spapr_vio.c | 13 ------------- hw/spapr_vio.h | 1 - hw/spapr_vty.c | 9 ++------- 4 files changed, 8 insertions(+), 32 deletions(-) (limited to 'hw') diff --git a/hw/spapr_llan.c b/hw/spapr_llan.c index abe1297..45674c4 100644 --- a/hw/spapr_llan.c +++ b/hw/spapr_llan.c @@ -474,16 +474,6 @@ static target_ulong h_multicast_ctrl(CPUState *env, sPAPREnvironment *spapr, return H_SUCCESS; } -static void vlan_hcalls(VIOsPAPRBus *bus) -{ - spapr_register_hypercall(H_REGISTER_LOGICAL_LAN, h_register_logical_lan); - spapr_register_hypercall(H_FREE_LOGICAL_LAN, h_free_logical_lan); - spapr_register_hypercall(H_SEND_LOGICAL_LAN, h_send_logical_lan); - spapr_register_hypercall(H_ADD_LOGICAL_LAN_BUFFER, - h_add_logical_lan_buffer); - spapr_register_hypercall(H_MULTICAST_CTRL, h_multicast_ctrl); -} - static VIOsPAPRDeviceInfo spapr_vlan = { .init = spapr_vlan_init, .devnode = spapr_vlan_devnode, @@ -491,7 +481,6 @@ static VIOsPAPRDeviceInfo spapr_vlan = { .dt_type = "network", .dt_compatible = "IBM,l-lan", .signal_mask = 0x1, - .hcalls = vlan_hcalls, .qdev.name = "spapr-vlan", .qdev.size = sizeof(VIOsPAPRVLANDevice), .qdev.props = (Property[]) { @@ -504,5 +493,11 @@ static VIOsPAPRDeviceInfo spapr_vlan = { static void spapr_vlan_register(void) { spapr_vio_bus_register_withprop(&spapr_vlan); + spapr_register_hypercall(H_REGISTER_LOGICAL_LAN, h_register_logical_lan); + spapr_register_hypercall(H_FREE_LOGICAL_LAN, h_free_logical_lan); + spapr_register_hypercall(H_SEND_LOGICAL_LAN, h_send_logical_lan); + spapr_register_hypercall(H_ADD_LOGICAL_LAN_BUFFER, + h_add_logical_lan_buffer); + spapr_register_hypercall(H_MULTICAST_CTRL, h_multicast_ctrl); } device_init(spapr_vlan_register); diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c index 2dcc036..5a35541 100644 --- a/hw/spapr_vio.c +++ b/hw/spapr_vio.c @@ -684,7 +684,6 @@ VIOsPAPRBus *spapr_vio_bus_init(void) VIOsPAPRBus *bus; BusState *qbus; DeviceState *dev; - DeviceInfo *qinfo; /* Create bridge device */ dev = qdev_create(NULL, "spapr-vio-bridge"); @@ -711,18 +710,6 @@ VIOsPAPRBus *spapr_vio_bus_init(void) spapr_rtas_register("ibm,set-tce-bypass", rtas_set_tce_bypass); spapr_rtas_register("quiesce", rtas_quiesce); - for (qinfo = device_info_list; qinfo; qinfo = qinfo->next) { - VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; - - if (qinfo->bus_info != &spapr_vio_bus_info) { - continue; - } - - if (info->hcalls) { - info->hcalls(bus); - } - } - return bus; } diff --git a/hw/spapr_vio.h b/hw/spapr_vio.h index a325a5f..2430d45 100644 --- a/hw/spapr_vio.h +++ b/hw/spapr_vio.h @@ -75,7 +75,6 @@ typedef struct { 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); } VIOsPAPRDeviceInfo; diff --git a/hw/spapr_vty.c b/hw/spapr_vty.c index f23cc36..e217314 100644 --- a/hw/spapr_vty.c +++ b/hw/spapr_vty.c @@ -135,18 +135,11 @@ void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, CharDriverState *chardev) qdev_init_nofail(dev); } -static void vty_hcalls(VIOsPAPRBus *bus) -{ - spapr_register_hypercall(H_PUT_TERM_CHAR, h_put_term_char); - spapr_register_hypercall(H_GET_TERM_CHAR, h_get_term_char); -} - static VIOsPAPRDeviceInfo spapr_vty = { .init = spapr_vty_init, .dt_name = "vty", .dt_type = "serial", .dt_compatible = "hvterm1", - .hcalls = vty_hcalls, .qdev.name = "spapr-vty", .qdev.size = sizeof(VIOsPAPRVTYDevice), .qdev.props = (Property[]) { @@ -182,5 +175,7 @@ static VIOsPAPRDevice *vty_lookup(sPAPREnvironment *spapr, target_ulong reg) static void spapr_vty_register(void) { spapr_vio_bus_register_withprop(&spapr_vty); + spapr_register_hypercall(H_PUT_TERM_CHAR, h_put_term_char); + spapr_register_hypercall(H_GET_TERM_CHAR, h_get_term_char); } device_init(spapr_vty_register); -- cgit v1.1 From 6e806cc38bb1a79ec52d7d86da4aca11cdc302c8 Mon Sep 17 00:00:00 2001 From: Bharata B Rao Date: Mon, 12 Dec 2011 18:24:30 +0000 Subject: pseries: FDT NUMA extensions to support multi-node guests Add NUMA specific properties to guest's device tree to boot a multi-node guests. This patch adds the following properties: ibm,associativity ibm,architecture-vec-5 ibm,associativity-reference-points With this, it becomes possible to use -numa option on pseries targets. Signed-off-by: Bharata B Rao Signed-off-by: David Gibson Signed-off-by: Alexander Graf --- hw/spapr.c | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++++++------ hw/spapr.h | 1 + 2 files changed, 102 insertions(+), 11 deletions(-) (limited to 'hw') diff --git a/hw/spapr.c b/hw/spapr.c index 2b901f1..1883270 100644 --- a/hw/spapr.c +++ b/hw/spapr.c @@ -97,6 +97,44 @@ qemu_irq spapr_allocate_irq(uint32_t hint, uint32_t *irq_num) return qirq; } +static int spapr_set_associativity(void *fdt, sPAPREnvironment *spapr) +{ + int ret = 0, offset; + CPUState *env; + char cpu_model[32]; + int smt = kvmppc_smt_threads(); + + assert(spapr->cpu_model); + + for (env = first_cpu; env != NULL; env = env->next_cpu) { + uint32_t associativity[] = {cpu_to_be32(0x5), + cpu_to_be32(0x0), + cpu_to_be32(0x0), + cpu_to_be32(0x0), + cpu_to_be32(env->numa_node), + cpu_to_be32(env->cpu_index)}; + + if ((env->cpu_index % smt) != 0) { + continue; + } + + snprintf(cpu_model, 32, "/cpus/%s@%x", spapr->cpu_model, + env->cpu_index); + + offset = fdt_path_offset(fdt, cpu_model); + if (offset < 0) { + return offset; + } + + ret = fdt_setprop(fdt, offset, "ibm,associativity", associativity, + sizeof(associativity)); + if (ret < 0) { + return ret; + } + } + return ret; +} + static void *spapr_create_fdt_skel(const char *cpu_model, target_phys_addr_t rma_size, target_phys_addr_t initrd_base, @@ -107,9 +145,7 @@ static void *spapr_create_fdt_skel(const char *cpu_model, { void *fdt; CPUState *env; - uint64_t mem_reg_property_rma[] = { 0, cpu_to_be64(rma_size) }; - uint64_t mem_reg_property_nonrma[] = { cpu_to_be64(rma_size), - cpu_to_be64(ram_size - rma_size) }; + uint64_t mem_reg_property[2]; 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)}; @@ -119,6 +155,13 @@ static void *spapr_create_fdt_skel(const char *cpu_model, int i; char *modelname; int smt = kvmppc_smt_threads(); + unsigned char vec5[] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x80}; + uint32_t refpoints[] = {cpu_to_be32(0x4), cpu_to_be32(0x4)}; + uint32_t associativity[] = {cpu_to_be32(0x4), cpu_to_be32(0x0), + cpu_to_be32(0x0), cpu_to_be32(0x0), + cpu_to_be32(0x0)}; + char mem_name[32]; + target_phys_addr_t node0_size, mem_start; #define _FDT(exp) \ do { \ @@ -146,6 +189,9 @@ static void *spapr_create_fdt_skel(const char *cpu_model, /* /chosen */ _FDT((fdt_begin_node(fdt, "chosen"))); + /* Set Form1_affinity */ + _FDT((fdt_property(fdt, "ibm,architecture-vec-5", vec5, sizeof(vec5)))); + _FDT((fdt_property_string(fdt, "bootargs", kernel_cmdline))); _FDT((fdt_property(fdt, "linux,initrd-start", &start_prop, sizeof(start_prop)))); @@ -164,24 +210,54 @@ static void *spapr_create_fdt_skel(const char *cpu_model, _FDT((fdt_end_node(fdt))); /* memory node(s) */ - _FDT((fdt_begin_node(fdt, "memory@0"))); + node0_size = (nb_numa_nodes > 1) ? node_mem[0] : ram_size; + if (rma_size > node0_size) { + rma_size = node0_size; + } + /* RMA */ + mem_reg_property[0] = 0; + mem_reg_property[1] = cpu_to_be64(rma_size); + _FDT((fdt_begin_node(fdt, "memory@0"))); _FDT((fdt_property_string(fdt, "device_type", "memory"))); - _FDT((fdt_property(fdt, "reg", mem_reg_property_rma, - sizeof(mem_reg_property_rma)))); + _FDT((fdt_property(fdt, "reg", mem_reg_property, + sizeof(mem_reg_property)))); + _FDT((fdt_property(fdt, "ibm,associativity", associativity, + sizeof(associativity)))); _FDT((fdt_end_node(fdt))); - if (ram_size > rma_size) { - char mem_name[32]; + /* RAM: Node 0 */ + if (node0_size > rma_size) { + mem_reg_property[0] = cpu_to_be64(rma_size); + mem_reg_property[1] = cpu_to_be64(node0_size - rma_size); - sprintf(mem_name, "memory@%" PRIx64, (uint64_t)rma_size); + sprintf(mem_name, "memory@" TARGET_FMT_lx, rma_size); _FDT((fdt_begin_node(fdt, mem_name))); _FDT((fdt_property_string(fdt, "device_type", "memory"))); - _FDT((fdt_property(fdt, "reg", mem_reg_property_nonrma, - sizeof(mem_reg_property_nonrma)))); + _FDT((fdt_property(fdt, "reg", mem_reg_property, + sizeof(mem_reg_property)))); + _FDT((fdt_property(fdt, "ibm,associativity", associativity, + sizeof(associativity)))); _FDT((fdt_end_node(fdt))); } + /* RAM: Node 1 and beyond */ + mem_start = node0_size; + for (i = 1; i < nb_numa_nodes; i++) { + mem_reg_property[0] = cpu_to_be64(mem_start); + mem_reg_property[1] = cpu_to_be64(node_mem[i]); + associativity[3] = associativity[4] = cpu_to_be32(i); + sprintf(mem_name, "memory@" TARGET_FMT_lx, mem_start); + _FDT((fdt_begin_node(fdt, mem_name))); + _FDT((fdt_property_string(fdt, "device_type", "memory"))); + _FDT((fdt_property(fdt, "reg", mem_reg_property, + sizeof(mem_reg_property)))); + _FDT((fdt_property(fdt, "ibm,associativity", associativity, + sizeof(associativity)))); + _FDT((fdt_end_node(fdt))); + mem_start += node_mem[i]; + } + /* cpus */ _FDT((fdt_begin_node(fdt, "cpus"))); @@ -194,6 +270,9 @@ static void *spapr_create_fdt_skel(const char *cpu_model, modelname[i] = toupper(modelname[i]); } + /* This is needed during FDT finalization */ + spapr->cpu_model = g_strdup(modelname); + for (env = first_cpu; env != NULL; env = env->next_cpu) { int index = env->cpu_index; uint32_t servers_prop[smp_threads]; @@ -280,6 +359,9 @@ static void *spapr_create_fdt_skel(const char *cpu_model, _FDT((fdt_property(fdt, "ibm,hypertas-functions", hypertas_prop, sizeof(hypertas_prop)))); + _FDT((fdt_property(fdt, "ibm,associativity-reference-points", + refpoints, sizeof(refpoints)))); + _FDT((fdt_end_node(fdt))); /* interrupt controller */ @@ -351,6 +433,14 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr, fprintf(stderr, "Couldn't set up RTAS device tree properties\n"); } + /* Advertise NUMA via ibm,associativity */ + if (nb_numa_nodes > 1) { + ret = spapr_set_associativity(fdt, spapr); + if (ret < 0) { + fprintf(stderr, "Couldn't set up NUMA device tree properties\n"); + } + } + _FDT((fdt_pack(fdt))); cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt)); diff --git a/hw/spapr.h b/hw/spapr.h index d624841..e946a34 100644 --- a/hw/spapr.h +++ b/hw/spapr.h @@ -21,6 +21,7 @@ typedef struct sPAPREnvironment { target_ulong entry_point; int next_irq; int rtc_offset; + char *cpu_model; } sPAPREnvironment; #define H_SUCCESS 0 -- cgit v1.1 From 05c194384f836240ea4c2da5fa3be43a54bff021 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Mon, 12 Dec 2011 18:24:32 +0000 Subject: pseries: Emit device tree nodes in reg order Although in theory the device tree has no inherent ordering, in practice the order of nodes in the device tree does effect the order that devices are detected by software. Currently the ordering is determined by the order the devices appear on the QEMU command line. Although that does give the user control over the ordering, it is fragile, especially when the user does not generate the command line manually - eg. when using libvirt etc. So order the device tree based on the reg value, ie. the address of on the VIO bus of the devices. This gives us a sane and stable ordering. Signed-off-by: Michael Ellerman Signed-off-by: David Gibson Signed-off-by: Alexander Graf [agraf] add braces --- hw/spapr_vio.c | 50 +++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 45 insertions(+), 5 deletions(-) (limited to 'hw') diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c index 5a35541..2cce421 100644 --- a/hw/spapr_vio.c +++ b/hw/spapr_vio.c @@ -736,21 +736,61 @@ static void spapr_vio_register_devices(void) device_init(spapr_vio_register_devices) #ifdef CONFIG_FDT +static int compare_reg(const void *p1, const void *p2) +{ + VIOsPAPRDevice const *dev1, *dev2; + + dev1 = (VIOsPAPRDevice *)*(DeviceState **)p1; + dev2 = (VIOsPAPRDevice *)*(DeviceState **)p2; + + if (dev1->reg < dev2->reg) { + return -1; + } + if (dev1->reg == dev2->reg) { + return 0; + } + + /* dev1->reg > dev2->reg */ + return 1; +} + int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt) { - DeviceState *qdev; - int ret = 0; + DeviceState *qdev, **qdevs; + int i, num, ret = 0; + /* Count qdevs on the bus list */ + num = 0; QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { - VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev; + num++; + } + + /* Copy out into an array of pointers */ + qdevs = g_malloc(sizeof(qdev) * num); + num = 0; + QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { + qdevs[num++] = qdev; + } + + /* Sort the array */ + qsort(qdevs, num, sizeof(qdev), compare_reg); + + /* Hack alert. Give the devices to libfdt in reverse order, we happen + * to know that will mean they are in forward order in the tree. */ + for (i = num - 1; i >= 0; i--) { + VIOsPAPRDevice *dev = (VIOsPAPRDevice *)(qdevs[i]); ret = vio_make_devnode(dev, fdt); if (ret < 0) { - return ret; + goto out; } } - return 0; + ret = 0; +out: + free(qdevs); + + return ret; } #endif /* CONFIG_FDT */ -- cgit v1.1 From 98331f8ad6a3e2cfbb402d72e6be47eac7706251 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Mon, 12 Dec 2011 18:24:33 +0000 Subject: pseries: Add a routine to find a stable "default" vty and use it In vty_lookup() we have a special case for supporting early debug in the kernel. This accepts reg == 0 as a special case to mean "any vty". We implement this by searching the vtys on the bus and returning the first we find. This means that the vty we chose depends on the order the vtys are specified on the QEMU command line - because that determines the order of the vtys on the bus. We'd rather the command line order was irrelevant, so instead return the vty with the lowest reg value. This is still a guess as to what the user really means, but it is at least stable WRT command line ordering. Signed-off-by: Michael Ellerman Signed-off-by: David Gibson Signed-off-by: Alexander Graf [agraf] fix braces --- hw/spapr_vty.c | 47 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 38 insertions(+), 9 deletions(-) (limited to 'hw') diff --git a/hw/spapr_vty.c b/hw/spapr_vty.c index e217314..2923ca7 100644 --- a/hw/spapr_vty.c +++ b/hw/spapr_vty.c @@ -149,24 +149,53 @@ static VIOsPAPRDeviceInfo spapr_vty = { }, }; +static VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus) +{ + VIOsPAPRDevice *sdev, *selected; + DeviceState *iter; + + /* + * To avoid the console bouncing around we want one VTY to be + * the "default". We haven't really got anything to go on, so + * arbitrarily choose the one with the lowest reg value. + */ + + selected = NULL; + QTAILQ_FOREACH(iter, &bus->bus.children, sibling) { + /* Only look at VTY devices */ + if (iter->info != &spapr_vty.qdev) { + continue; + } + + sdev = DO_UPCAST(VIOsPAPRDevice, qdev, iter); + + /* First VTY we've found, so it is selected for now */ + if (!selected) { + selected = sdev; + continue; + } + + /* Choose VTY with lowest reg value */ + if (sdev->reg < selected->reg) { + selected = sdev; + } + } + + return selected; +} + static VIOsPAPRDevice *vty_lookup(sPAPREnvironment *spapr, target_ulong reg) { VIOsPAPRDevice *sdev; sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); if (!sdev && reg == 0) { - DeviceState *qdev; - /* Hack for kernel early debug, which always specifies reg==0. - * We search all VIO devices, and grab the first available vty - * device. This attempts to mimic existing PowerVM behaviour + * We search all VIO devices, and grab the vty with the lowest + * reg. This attempts to mimic existing PowerVM behaviour * (early debug does work there, despite having no vty with * reg==0. */ - QTAILQ_FOREACH(qdev, &spapr->vio_bus->bus.children, sibling) { - if (qdev->info == &spapr_vty.qdev) { - return DO_UPCAST(VIOsPAPRDevice, qdev, qdev); - } - } + return spapr_vty_get_default(spapr->vio_bus); } return sdev; -- cgit v1.1 From 68f3a94c64bbaaf8c7f2daa70de1b5d87a432f86 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Tue, 13 Dec 2011 15:24:34 +1100 Subject: pseries: Populate "/chosen/linux,stdout-path" in the FDT There is a device tree property "/chosen/linux,stdout-path" which indicates which device should be used as stdout - ie. "the console". Currently we don't specify anything, which means both firmware and Linux choose something arbitrarily. Use the routine we added in the last patch to pick a default vty and specify it as stdout. Currently SLOF doesn't use the property, but we are hoping to update it to do so. Signed-off-by: Michael Ellerman Signed-off-by: David Gibson Signed-off-by: Alexander Graf --- hw/spapr.c | 2 ++ hw/spapr_vio.c | 34 ++++++++++++++++++++++++++++++++++ hw/spapr_vio.h | 3 +++ hw/spapr_vty.c | 2 +- 4 files changed, 40 insertions(+), 1 deletion(-) (limited to 'hw') diff --git a/hw/spapr.c b/hw/spapr.c index 1883270..6a543de 100644 --- a/hw/spapr.c +++ b/hw/spapr.c @@ -441,6 +441,8 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr, } } + spapr_populate_chosen_stdout(fdt, spapr->vio_bus); + _FDT((fdt_pack(fdt))); cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt)); diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c index 2cce421..cd03416 100644 --- a/hw/spapr_vio.c +++ b/hw/spapr_vio.c @@ -793,4 +793,38 @@ out: return ret; } + +int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus) +{ + VIOsPAPRDevice *dev; + char *name, *path; + int ret, offset; + + dev = spapr_vty_get_default(bus); + if (!dev) + return 0; + + offset = fdt_path_offset(fdt, "/chosen"); + if (offset < 0) { + return offset; + } + + name = vio_format_dev_name(dev); + if (!name) { + return -ENOMEM; + } + + if (asprintf(&path, "/vdevice/%s", name) < 0) { + path = NULL; + ret = -ENOMEM; + goto out; + } + + ret = fdt_setprop_string(fdt, offset, "linux,stdout-path", path); +out: + free(name); + free(path); + + return ret; +} #endif /* CONFIG_FDT */ diff --git a/hw/spapr_vio.h b/hw/spapr_vio.h index 2430d45..0984d55 100644 --- a/hw/spapr_vio.h +++ b/hw/spapr_vio.h @@ -82,6 +82,7 @@ extern VIOsPAPRBus *spapr_vio_bus_init(void); 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_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus); extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode); @@ -107,6 +108,8 @@ void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, CharDriverState *chardev); void spapr_vlan_create(VIOsPAPRBus *bus, uint32_t reg, NICInfo *nd); void spapr_vscsi_create(VIOsPAPRBus *bus, uint32_t reg); +VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus); + int spapr_tce_set_bypass(uint32_t unit, uint32_t enable); void spapr_vio_quiesce(void); diff --git a/hw/spapr_vty.c b/hw/spapr_vty.c index 2923ca7..c5fb096 100644 --- a/hw/spapr_vty.c +++ b/hw/spapr_vty.c @@ -149,7 +149,7 @@ static VIOsPAPRDeviceInfo spapr_vty = { }, }; -static VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus) +VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus) { VIOsPAPRDevice *sdev, *selected; DeviceState *iter; -- cgit v1.1 From 9fc380d3ed1cfac7d87dbe2a140e465cac58ed7b Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Mon, 12 Dec 2011 18:24:35 +0000 Subject: pseries: Check for duplicate addresses on the spapr-vio bus Check that devices on the spapr vio bus aren't given duplicate addresses. Currently we will not run with duplicate devices, the fdt code will spot it, but the error reporting is not great. With this patch we can report the error nicely in terms of the device names given by the user. Signed-off-by: Michael Ellerman Signed-off-by: David Gibson Signed-off-by: Alexander Graf --- hw/spapr_vio.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'hw') diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c index cd03416..7a86dc8 100644 --- a/hw/spapr_vio.c +++ b/hw/spapr_vio.c @@ -621,11 +621,43 @@ static void rtas_quiesce(sPAPREnvironment *spapr, uint32_t token, rtas_st(rets, 0, 0); } +static int spapr_vio_check_reg(VIOsPAPRDevice *sdev, VIOsPAPRDeviceInfo *info) +{ + VIOsPAPRDevice *other_sdev; + DeviceState *qdev; + VIOsPAPRBus *sbus; + + sbus = DO_UPCAST(VIOsPAPRBus, bus, sdev->qdev.parent_bus); + + /* + * Check two device aren't given clashing addresses by the user (or some + * other mechanism). We have to open code this because we have to check + * for matches with devices other than us. + */ + QTAILQ_FOREACH(qdev, &sbus->bus.children, sibling) { + other_sdev = DO_UPCAST(VIOsPAPRDevice, qdev, qdev); + + if (other_sdev != sdev && other_sdev->reg == sdev->reg) { + fprintf(stderr, "vio: %s and %s devices conflict at address %#x\n", + info->qdev.name, other_sdev->qdev.info->name, sdev->reg); + return -EEXIST; + } + } + + return 0; +} + static int spapr_vio_busdev_init(DeviceState *qdev, DeviceInfo *qinfo) { VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev; char *id; + int ret; + + ret = spapr_vio_check_reg(dev, info); + if (ret) { + return ret; + } /* Don't overwrite ids assigned on the command line */ if (!dev->qdev.id) { -- cgit v1.1