diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries')
| -rw-r--r-- | arch/powerpc/platforms/pseries/dtl.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/firmware.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-cpu.c | 173 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-memory.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/lpar.c | 18 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/msi.c | 296 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/pci_dlpar.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/pseries.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/ras.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/vas.c | 2 |
11 files changed, 390 insertions, 122 deletions
diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c index 982f069e4c31..352af5b14a0f 100644 --- a/arch/powerpc/platforms/pseries/dtl.c +++ b/arch/powerpc/platforms/pseries/dtl.c @@ -11,10 +11,10 @@ #include <linux/spinlock.h> #include <asm/smp.h> #include <linux/uaccess.h> +#include <linux/debugfs.h> #include <asm/firmware.h> #include <asm/dtl.h> #include <asm/lppaca.h> -#include <asm/debugfs.h> #include <asm/plpar_wrappers.h> #include <asm/machdep.h> @@ -338,7 +338,7 @@ static int dtl_init(void) /* set up common debugfs structure */ - dtl_dir = debugfs_create_dir("dtl", powerpc_debugfs_root); + dtl_dir = debugfs_create_dir("dtl", arch_debugfs_dir); debugfs_create_x8("dtl_event_mask", 0600, dtl_dir, &dtl_event_mask); debugfs_create_u32("dtl_buf_entries", 0400, dtl_dir, &dtl_buf_entries); diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c index 4c7b7f5a2ebc..f162156b7b68 100644 --- a/arch/powerpc/platforms/pseries/firmware.c +++ b/arch/powerpc/platforms/pseries/firmware.c @@ -119,10 +119,11 @@ struct vec5_fw_feature { static __initdata struct vec5_fw_feature vec5_fw_features_table[] = { - {FW_FEATURE_TYPE1_AFFINITY, OV5_TYPE1_AFFINITY}, + {FW_FEATURE_FORM1_AFFINITY, OV5_FORM1_AFFINITY}, {FW_FEATURE_PRRN, OV5_PRRN}, {FW_FEATURE_DRMEM_V2, OV5_DRMEM_V2}, {FW_FEATURE_DRC_INFO, OV5_DRC_INFO}, + {FW_FEATURE_FORM2_AFFINITY, OV5_FORM2_AFFINITY}, }; static void __init fw_vec5_feature_init(const char *vec5, unsigned long len) diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index 7e970f81d8ff..d646c22e94ab 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -39,6 +39,12 @@ /* This version can't take the spinlock, because it never returns */ static int rtas_stop_self_token = RTAS_UNKNOWN_SERVICE; +/* + * Record the CPU ids used on each nodes. + * Protected by cpu_add_remove_lock. + */ +static cpumask_var_t node_recorded_ids_map[MAX_NUMNODES]; + static void rtas_stop_self(void) { static struct rtas_args args; @@ -139,72 +145,148 @@ static void pseries_cpu_die(unsigned int cpu) paca_ptrs[cpu]->cpu_start = 0; } +/** + * find_cpu_id_range - found a linear ranger of @nthreads free CPU ids. + * @nthreads : the number of threads (cpu ids) + * @assigned_node : the node it belongs to or NUMA_NO_NODE if free ids from any + * node can be peek. + * @cpu_mask: the returned CPU mask. + * + * Returns 0 on success. + */ +static int find_cpu_id_range(unsigned int nthreads, int assigned_node, + cpumask_var_t *cpu_mask) +{ + cpumask_var_t candidate_mask; + unsigned int cpu, node; + int rc = -ENOSPC; + + if (!zalloc_cpumask_var(&candidate_mask, GFP_KERNEL)) + return -ENOMEM; + + cpumask_clear(*cpu_mask); + for (cpu = 0; cpu < nthreads; cpu++) + cpumask_set_cpu(cpu, *cpu_mask); + + BUG_ON(!cpumask_subset(cpu_present_mask, cpu_possible_mask)); + + /* Get a bitmap of unoccupied slots. */ + cpumask_xor(candidate_mask, cpu_possible_mask, cpu_present_mask); + + if (assigned_node != NUMA_NO_NODE) { + /* + * Remove free ids previously assigned on the other nodes. We + * can walk only online nodes because once a node became online + * it is not turned offlined back. + */ + for_each_online_node(node) { + if (node == assigned_node) + continue; + cpumask_andnot(candidate_mask, candidate_mask, + node_recorded_ids_map[node]); + } + } + + if (cpumask_empty(candidate_mask)) + goto out; + + while (!cpumask_empty(*cpu_mask)) { + if (cpumask_subset(*cpu_mask, candidate_mask)) + /* Found a range where we can insert the new cpu(s) */ + break; + cpumask_shift_left(*cpu_mask, *cpu_mask, nthreads); + } + + if (!cpumask_empty(*cpu_mask)) + rc = 0; + +out: + free_cpumask_var(candidate_mask); + return rc; +} + /* * Update cpu_present_mask and paca(s) for a new cpu node. The wrinkle - * here is that a cpu device node may represent up to two logical cpus + * here is that a cpu device node may represent multiple logical cpus * in the SMT case. We must honor the assumption in other code that * the logical ids for sibling SMT threads x and y are adjacent, such * that x^1 == y and y^1 == x. */ static int pseries_add_processor(struct device_node *np) { - unsigned int cpu; - cpumask_var_t candidate_mask, tmp; - int err = -ENOSPC, len, nthreads, i; + int len, nthreads, node, cpu, assigned_node; + int rc = 0; + cpumask_var_t cpu_mask; const __be32 *intserv; intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len); if (!intserv) return 0; - zalloc_cpumask_var(&candidate_mask, GFP_KERNEL); - zalloc_cpumask_var(&tmp, GFP_KERNEL); - nthreads = len / sizeof(u32); - for (i = 0; i < nthreads; i++) - cpumask_set_cpu(i, tmp); - cpu_maps_update_begin(); + if (!alloc_cpumask_var(&cpu_mask, GFP_KERNEL)) + return -ENOMEM; - BUG_ON(!cpumask_subset(cpu_present_mask, cpu_possible_mask)); + /* + * Fetch from the DT nodes read by dlpar_configure_connector() the NUMA + * node id the added CPU belongs to. + */ + node = of_node_to_nid(np); + if (node < 0 || !node_possible(node)) + node = first_online_node; - /* Get a bitmap of unoccupied slots. */ - cpumask_xor(candidate_mask, cpu_possible_mask, cpu_present_mask); - if (cpumask_empty(candidate_mask)) { - /* If we get here, it most likely means that NR_CPUS is - * less than the partition's max processors setting. + BUG_ON(node == NUMA_NO_NODE); + assigned_node = node; + + cpu_maps_update_begin(); + + rc = find_cpu_id_range(nthreads, node, &cpu_mask); + if (rc && nr_node_ids > 1) { + /* + * Try again, considering the free CPU ids from the other node. */ - printk(KERN_ERR "Cannot add cpu %pOF; this system configuration" - " supports %d logical cpus.\n", np, - num_possible_cpus()); - goto out_unlock; + node = NUMA_NO_NODE; + rc = find_cpu_id_range(nthreads, NUMA_NO_NODE, &cpu_mask); } - while (!cpumask_empty(tmp)) - if (cpumask_subset(tmp, candidate_mask)) - /* Found a range where we can insert the new cpu(s) */ - break; - else - cpumask_shift_left(tmp, tmp, nthreads); - - if (cpumask_empty(tmp)) { - printk(KERN_ERR "Unable to find space in cpu_present_mask for" - " processor %pOFn with %d thread(s)\n", np, - nthreads); - goto out_unlock; + if (rc) { + pr_err("Cannot add cpu %pOF; this system configuration" + " supports %d logical cpus.\n", np, num_possible_cpus()); + goto out; } - for_each_cpu(cpu, tmp) { + for_each_cpu(cpu, cpu_mask) { BUG_ON(cpu_present(cpu)); set_cpu_present(cpu, true); set_hard_smp_processor_id(cpu, be32_to_cpu(*intserv++)); } - err = 0; -out_unlock: + + /* Record the newly used CPU ids for the associate node. */ + cpumask_or(node_recorded_ids_map[assigned_node], + node_recorded_ids_map[assigned_node], cpu_mask); + + /* + * If node is set to NUMA_NO_NODE, CPU ids have be reused from + * another node, remove them from its mask. + */ + if (node == NUMA_NO_NODE) { + cpu = cpumask_first(cpu_mask); + pr_warn("Reusing free CPU ids %d-%d from another node\n", + cpu, cpu + nthreads - 1); + for_each_online_node(node) { + if (node == assigned_node) + continue; + cpumask_andnot(node_recorded_ids_map[node], + node_recorded_ids_map[node], + cpu_mask); + } + } + +out: cpu_maps_update_done(); - free_cpumask_var(candidate_mask); - free_cpumask_var(tmp); - return err; + free_cpumask_var(cpu_mask); + return rc; } /* @@ -498,6 +580,8 @@ static ssize_t dlpar_cpu_add(u32 drc_index) return saved_rc; } + update_numa_distance(dn); + rc = dlpar_online_cpu(dn); if (rc) { saved_rc = rc; @@ -908,6 +992,7 @@ static struct notifier_block pseries_smp_nb = { static int __init pseries_cpu_hotplug_init(void) { int qcss_tok; + unsigned int node; #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE ppc_md.cpu_probe = dlpar_cpu_probe; @@ -929,8 +1014,18 @@ static int __init pseries_cpu_hotplug_init(void) smp_ops->cpu_die = pseries_cpu_die; /* Processors can be added/removed only on LPAR */ - if (firmware_has_feature(FW_FEATURE_LPAR)) + if (firmware_has_feature(FW_FEATURE_LPAR)) { + for_each_node(node) { + alloc_bootmem_cpumask_var(&node_recorded_ids_map[node]); + + /* Record ids of CPU added at boot time */ + cpumask_or(node_recorded_ids_map[node], + node_recorded_ids_map[node], + cpumask_of_node(node)); + } + of_reconfig_notifier_register(&pseries_smp_nb); + } return 0; } diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index 377d852f5a9a..14fccd7b9c99 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -180,6 +180,8 @@ static int update_lmb_associativity_index(struct drmem_lmb *lmb) return -ENODEV; } + update_numa_distance(lmb_node); + dr_node = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); if (!dr_node) { dlpar_free_cc_nodes(lmb_node); @@ -979,6 +981,10 @@ static int pseries_memory_notifier(struct notifier_block *nb, case OF_RECONFIG_DETACH_NODE: err = pseries_remove_mem_node(rd->dn); break; + case OF_RECONFIG_UPDATE_PROPERTY: + if (!strcmp(rd->dn->name, + "ibm,dynamic-reconfiguration-memory")) + drmem_update_lmbs(rd->prop); } return notifier_from_errno(err); } diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index dab356e3ff87..3df6bdfea475 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -22,6 +22,8 @@ #include <linux/workqueue.h> #include <linux/proc_fs.h> #include <linux/pgtable.h> +#include <linux/debugfs.h> + #include <asm/processor.h> #include <asm/mmu.h> #include <asm/page.h> @@ -39,7 +41,6 @@ #include <asm/kexec.h> #include <asm/fadump.h> #include <asm/asm-prototypes.h> -#include <asm/debugfs.h> #include <asm/dtl.h> #include "pseries.h" @@ -261,7 +262,7 @@ static int cpu_relative_dispatch_distance(int last_disp_cpu, int cur_disp_cpu) if (!last_disp_cpu_assoc || !cur_disp_cpu_assoc) return -EIO; - return cpu_distance(last_disp_cpu_assoc, cur_disp_cpu_assoc); + return cpu_relative_distance(last_disp_cpu_assoc, cur_disp_cpu_assoc); } static int cpu_home_node_dispatch_distance(int disp_cpu) @@ -281,7 +282,7 @@ static int cpu_home_node_dispatch_distance(int disp_cpu) if (!disp_cpu_assoc || !vcpu_assoc) return -EIO; - return cpu_distance(disp_cpu_assoc, vcpu_assoc); + return cpu_relative_distance(disp_cpu_assoc, vcpu_assoc); } static void update_vcpu_disp_stat(int disp_cpu) @@ -801,7 +802,8 @@ static long pSeries_lpar_hpte_remove(unsigned long hpte_group) return -1; } -static void manual_hpte_clear_all(void) +/* Called during kexec sequence with MMU off */ +static notrace void manual_hpte_clear_all(void) { unsigned long size_bytes = 1UL << ppc64_pft_size; unsigned long hpte_count = size_bytes >> 4; @@ -834,7 +836,8 @@ static void manual_hpte_clear_all(void) } } -static int hcall_hpte_clear_all(void) +/* Called during kexec sequence with MMU off */ +static notrace int hcall_hpte_clear_all(void) { int rc; @@ -845,7 +848,8 @@ static int hcall_hpte_clear_all(void) return rc; } -static void pseries_hpte_clear_all(void) +/* Called during kexec sequence with MMU off */ +static notrace void pseries_hpte_clear_all(void) { int rc; @@ -2016,7 +2020,7 @@ static int __init vpa_debugfs_init(void) if (!firmware_has_feature(FW_FEATURE_SPLPAR)) return 0; - vpa_dir = debugfs_create_dir("vpa", powerpc_debugfs_root); + vpa_dir = debugfs_create_dir("vpa", arch_debugfs_dir); /* set up the per-cpu vpa file*/ for_each_possible_cpu(i) { diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c index 637300330507..1b305e411862 100644 --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -13,6 +13,7 @@ #include <asm/hw_irq.h> #include <asm/ppc-pci.h> #include <asm/machdep.h> +#include <asm/xive.h> #include "pseries.h" @@ -110,21 +111,6 @@ static int rtas_query_irq_number(struct pci_dn *pdn, int offset) return rtas_ret[0]; } -static void rtas_teardown_msi_irqs(struct pci_dev *pdev) -{ - struct msi_desc *entry; - - for_each_pci_msi_entry(entry, pdev) { - if (!entry->irq) - continue; - - irq_set_msi_desc(entry->irq, NULL); - irq_dispose_mapping(entry->irq); - } - - rtas_disable_msi(pdev); -} - static int check_req(struct pci_dev *pdev, int nvec, char *prop_name) { struct device_node *dn; @@ -164,12 +150,12 @@ static int check_req_msix(struct pci_dev *pdev, int nvec) /* Quota calculation */ -static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total) +static struct device_node *__find_pe_total_msi(struct device_node *node, int *total) { struct device_node *dn; const __be32 *p; - dn = of_node_get(pci_device_to_OF_node(dev)); + dn = of_node_get(node); while (dn) { p = of_get_property(dn, "ibm,pe-total-#msi", NULL); if (p) { @@ -185,6 +171,11 @@ static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total) return NULL; } +static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total) +{ + return __find_pe_total_msi(pci_device_to_OF_node(dev), total); +} + static struct device_node *find_pe_dn(struct pci_dev *dev, int *total) { struct device_node *dn; @@ -368,12 +359,11 @@ static void rtas_hack_32bit_msi_gen2(struct pci_dev *pdev) pci_write_config_dword(pdev, pdev->msi_cap + PCI_MSI_ADDRESS_HI, 0); } -static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec_in, int type) +static int rtas_prepare_msi_irqs(struct pci_dev *pdev, int nvec_in, int type, + msi_alloc_info_t *arg) { struct pci_dn *pdn; - int hwirq, virq, i, quota, rc; - struct msi_desc *entry; - struct msi_msg msg; + int quota, rc; int nvec = nvec_in; int use_32bit_msi_hack = 0; @@ -451,53 +441,229 @@ again: return rc; } - i = 0; - for_each_pci_msi_entry(entry, pdev) { - hwirq = rtas_query_irq_number(pdn, i++); - if (hwirq < 0) { - pr_debug("rtas_msi: error (%d) getting hwirq\n", rc); - return hwirq; - } + return 0; +} - /* - * Depending on the number of online CPUs in the original - * kernel, it is likely for CPU #0 to be offline in a kdump - * kernel. The associated IRQs in the affinity mappings - * provided by irq_create_affinity_masks() are thus not - * started by irq_startup(), as per-design for managed IRQs. - * This can be a problem with multi-queue block devices driven - * by blk-mq : such a non-started IRQ is very likely paired - * with the single queue enforced by blk-mq during kdump (see - * blk_mq_alloc_tag_set()). This causes the device to remain - * silent and likely hangs the guest at some point. - * - * We don't really care for fine-grained affinity when doing - * kdump actually : simply ignore the pre-computed affinity - * masks in this case and let the default mask with all CPUs - * be used when creating the IRQ mappings. - */ - if (is_kdump_kernel()) - virq = irq_create_mapping(NULL, hwirq); - else - virq = irq_create_mapping_affinity(NULL, hwirq, - entry->affinity); +static int pseries_msi_ops_prepare(struct irq_domain *domain, struct device *dev, + int nvec, msi_alloc_info_t *arg) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct msi_desc *desc = first_pci_msi_entry(pdev); + int type = desc->msi_attrib.is_msix ? PCI_CAP_ID_MSIX : PCI_CAP_ID_MSI; - if (!virq) { - pr_debug("rtas_msi: Failed mapping hwirq %d\n", hwirq); - return -ENOSPC; - } + return rtas_prepare_msi_irqs(pdev, nvec, type, arg); +} + +/* + * ->msi_free() is called before irq_domain_free_irqs_top() when the + * handler data is still available. Use that to clear the XIVE + * controller data. + */ +static void pseries_msi_ops_msi_free(struct irq_domain *domain, + struct msi_domain_info *info, + unsigned int irq) +{ + if (xive_enabled()) + xive_irq_free_data(irq); +} + +/* + * RTAS can not disable one MSI at a time. It's all or nothing. Do it + * at the end after all IRQs have been freed. + */ +static void pseries_msi_domain_free_irqs(struct irq_domain *domain, + struct device *dev) +{ + if (WARN_ON_ONCE(!dev_is_pci(dev))) + return; + + __msi_domain_free_irqs(domain, dev); + + rtas_disable_msi(to_pci_dev(dev)); +} + +static struct msi_domain_ops pseries_pci_msi_domain_ops = { + .msi_prepare = pseries_msi_ops_prepare, + .msi_free = pseries_msi_ops_msi_free, + .domain_free_irqs = pseries_msi_domain_free_irqs, +}; + +static void pseries_msi_shutdown(struct irq_data *d) +{ + d = d->parent_data; + if (d->chip->irq_shutdown) + d->chip->irq_shutdown(d); +} + +static void pseries_msi_mask(struct irq_data *d) +{ + pci_msi_mask_irq(d); + irq_chip_mask_parent(d); +} + +static void pseries_msi_unmask(struct irq_data *d) +{ + pci_msi_unmask_irq(d); + irq_chip_unmask_parent(d); +} - dev_dbg(&pdev->dev, "rtas_msi: allocated virq %d\n", virq); - irq_set_msi_desc(virq, entry); +static struct irq_chip pseries_pci_msi_irq_chip = { + .name = "pSeries-PCI-MSI", + .irq_shutdown = pseries_msi_shutdown, + .irq_mask = pseries_msi_mask, + .irq_unmask = pseries_msi_unmask, + .irq_eoi = irq_chip_eoi_parent, +}; + +static struct msi_domain_info pseries_msi_domain_info = { + .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS | + MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX), + .ops = &pseries_pci_msi_domain_ops, + .chip = &pseries_pci_msi_irq_chip, +}; + +static void pseries_msi_compose_msg(struct irq_data *data, struct msi_msg *msg) +{ + __pci_read_msi_msg(irq_data_get_msi_desc(data), msg); +} + +static struct irq_chip pseries_msi_irq_chip = { + .name = "pSeries-MSI", + .irq_shutdown = pseries_msi_shutdown, + .irq_mask = irq_chip_mask_parent, + .irq_unmask = irq_chip_unmask_parent, + .irq_eoi = irq_chip_eoi_parent, + .irq_set_affinity = irq_chip_set_affinity_parent, + .irq_compose_msi_msg = pseries_msi_compose_msg, +}; + +static int pseries_irq_parent_domain_alloc(struct irq_domain *domain, unsigned int virq, + irq_hw_number_t hwirq) +{ + struct irq_fwspec parent_fwspec; + int ret; + + parent_fwspec.fwnode = domain->parent->fwnode; + parent_fwspec.param_count = 2; + parent_fwspec.param[0] = hwirq; + parent_fwspec.param[1] = IRQ_TYPE_EDGE_RISING; + + ret = irq_domain_alloc_irqs_parent(domain, virq, 1, &parent_fwspec); + if (ret) + return ret; + + return 0; +} + +static int pseries_irq_domain_alloc(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs, void *arg) +{ + struct pci_controller *phb = domain->host_data; + msi_alloc_info_t *info = arg; + struct msi_desc *desc = info->desc; + struct pci_dev *pdev = msi_desc_to_pci_dev(desc); + int hwirq; + int i, ret; + + hwirq = rtas_query_irq_number(pci_get_pdn(pdev), desc->msi_attrib.entry_nr); + if (hwirq < 0) { + dev_err(&pdev->dev, "Failed to query HW IRQ: %d\n", hwirq); + return hwirq; + } + + dev_dbg(&pdev->dev, "%s bridge %pOF %d/%x #%d\n", __func__, + phb->dn, virq, hwirq, nr_irqs); + + for (i = 0; i < nr_irqs; i++) { + ret = pseries_irq_parent_domain_alloc(domain, virq + i, hwirq + i); + if (ret) + goto out; + + irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i, + &pseries_msi_irq_chip, domain->host_data); + } + + return 0; + +out: + /* TODO: handle RTAS cleanup in ->msi_finish() ? */ + irq_domain_free_irqs_parent(domain, virq, i - 1); + return ret; +} + +static void pseries_irq_domain_free(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs) +{ + struct irq_data *d = irq_domain_get_irq_data(domain, virq); + struct pci_controller *phb = irq_data_get_irq_chip_data(d); + + pr_debug("%s bridge %pOF %d #%d\n", __func__, phb->dn, virq, nr_irqs); + + /* XIVE domain data is cleared through ->msi_free() */ +} - /* Read config space back so we can restore after reset */ - __pci_read_msi_msg(entry, &msg); - entry->msg = msg; +static const struct irq_domain_ops pseries_irq_domain_ops = { + .alloc = pseries_irq_domain_alloc, + .free = pseries_irq_domain_free, +}; + +static int __pseries_msi_allocate_domains(struct pci_controller *phb, + unsigned int count) +{ + struct irq_domain *parent = irq_get_default_host(); + + phb->fwnode = irq_domain_alloc_named_id_fwnode("pSeries-MSI", + phb->global_number); + if (!phb->fwnode) + return -ENOMEM; + + phb->dev_domain = irq_domain_create_hierarchy(parent, 0, count, + phb->fwnode, + &pseries_irq_domain_ops, phb); + if (!phb->dev_domain) { + pr_err("PCI: failed to create IRQ domain bridge %pOF (domain %d)\n", + phb->dn, phb->global_number); + irq_domain_free_fwnode(phb->fwnode); + return -ENOMEM; + } + + phb->msi_domain = pci_msi_create_irq_domain(of_node_to_fwnode(phb->dn), + &pseries_msi_domain_info, + phb->dev_domain); + if (!phb->msi_domain) { + pr_err("PCI: failed to create MSI IRQ domain bridge %pOF (domain %d)\n", + phb->dn, phb->global_number); + irq_domain_free_fwnode(phb->fwnode); + irq_domain_remove(phb->dev_domain); + return -ENOMEM; } return 0; } +int pseries_msi_allocate_domains(struct pci_controller *phb) +{ + int count; + + if (!__find_pe_total_msi(phb->dn, &count)) { + pr_err("PCI: failed to find MSIs for bridge %pOF (domain %d)\n", + phb->dn, phb->global_number); + return -ENOSPC; + } + + return __pseries_msi_allocate_domains(phb, count); +} + +void pseries_msi_free_domains(struct pci_controller *phb) +{ + if (phb->msi_domain) + irq_domain_remove(phb->msi_domain); + if (phb->dev_domain) + irq_domain_remove(phb->dev_domain); + if (phb->fwnode) + irq_domain_free_fwnode(phb->fwnode); +} + static void rtas_msi_pci_irq_fixup(struct pci_dev *pdev) { /* No LSI -> leave MSIs (if any) configured */ @@ -518,8 +684,6 @@ static void rtas_msi_pci_irq_fixup(struct pci_dev *pdev) static int rtas_msi_init(void) { - struct pci_controller *phb; - query_token = rtas_token("ibm,query-interrupt-source-number"); change_token = rtas_token("ibm,change-msi"); @@ -531,16 +695,6 @@ static int rtas_msi_init(void) pr_debug("rtas_msi: Registering RTAS MSI callbacks.\n"); - WARN_ON(pseries_pci_controller_ops.setup_msi_irqs); - pseries_pci_controller_ops.setup_msi_irqs = rtas_setup_msi_irqs; - pseries_pci_controller_ops.teardown_msi_irqs = rtas_teardown_msi_irqs; - - list_for_each_entry(phb, &hose_list, list_node) { - WARN_ON(phb->controller_ops.setup_msi_irqs); - phb->controller_ops.setup_msi_irqs = rtas_setup_msi_irqs; - phb->controller_ops.teardown_msi_irqs = rtas_teardown_msi_irqs; - } - WARN_ON(ppc_md.pci_irq_fixup); ppc_md.pci_irq_fixup = rtas_msi_pci_irq_fixup; diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c index a8f9140a24fa..90c9d3531694 100644 --- a/arch/powerpc/platforms/pseries/pci_dlpar.c +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c @@ -33,6 +33,8 @@ struct pci_controller *init_phb_dynamic(struct device_node *dn) pci_devs_phb_init_dynamic(phb); + pseries_msi_allocate_domains(phb); + /* Create EEH devices for the PHB */ eeh_phb_pe_create(phb); @@ -74,6 +76,8 @@ int remove_phb_dynamic(struct pci_controller *phb) } } + pseries_msi_free_domains(phb); + /* Remove the PCI bus and unregister the bridge device from sysfs */ phb->bus = NULL; pci_remove_bus(b); diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h index 1f051a786fb3..3544778e06d0 100644 --- a/arch/powerpc/platforms/pseries/pseries.h +++ b/arch/powerpc/platforms/pseries/pseries.h @@ -85,6 +85,8 @@ struct pci_host_bridge; int pseries_root_bridge_prepare(struct pci_host_bridge *bridge); extern struct pci_controller_ops pseries_pci_controller_ops; +int pseries_msi_allocate_domains(struct pci_controller *phb); +void pseries_msi_free_domains(struct pci_controller *phb); unsigned long pseries_memory_block_size(void); diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index 167f2e1b8d39..56092dccfdb8 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -783,7 +783,7 @@ static int recover_mce(struct pt_regs *regs, struct machine_check_event *evt) { int recovered = 0; - if (!(regs->msr & MSR_RI)) { + if (regs_is_unrecoverable(regs)) { /* If MSR_RI isn't set, we cannot recover */ pr_err("Machine check interrupt unrecoverable: MSR(RI=0)\n"); recovered = 0; diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 631a0d57b6cd..35724caf8a83 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -486,6 +486,8 @@ static void __init pSeries_discover_phbs(void) /* create pci_dn's for DT nodes under this PHB */ pci_devs_phb_init_dynamic(phb); + + pseries_msi_allocate_domains(phb); } of_node_put(root); diff --git a/arch/powerpc/platforms/pseries/vas.c b/arch/powerpc/platforms/pseries/vas.c index b5c1cf1bc64d..b043e3936d21 100644 --- a/arch/powerpc/platforms/pseries/vas.c +++ b/arch/powerpc/platforms/pseries/vas.c @@ -184,7 +184,7 @@ static int h_get_nx_fault(u32 winid, u64 buffer) * Note: The hypervisor forwards an interrupt for each fault request. * So one fault CRB to process for each H_GET_NX_FAULT hcall. */ -irqreturn_t pseries_vas_fault_thread_fn(int irq, void *data) +static irqreturn_t pseries_vas_fault_thread_fn(int irq, void *data) { struct pseries_vas_window *txwin = data; struct coprocessor_request_block crb; |