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-rw-r--r--arch/powerpc/platforms/pseries/Kconfig6
-rw-r--r--arch/powerpc/platforms/pseries/Makefile1
-rw-r--r--arch/powerpc/platforms/pseries/hotplug-memory.c3
-rw-r--r--arch/powerpc/platforms/pseries/lpar.c16
-rw-r--r--arch/powerpc/platforms/pseries/mobility.c1
-rw-r--r--arch/powerpc/platforms/pseries/pci_dlpar.c4
-rw-r--r--arch/powerpc/platforms/pseries/plpks.c4
-rw-r--r--arch/powerpc/platforms/pseries/plpks_sed_ops.c131
-rw-r--r--arch/powerpc/platforms/pseries/rtas-work-area.c1
9 files changed, 157 insertions, 10 deletions
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index 4ebf2ef284..afc0f6a613 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -164,6 +164,12 @@ config PSERIES_PLPKS
# This option is selected by in-kernel consumers that require
# access to the PKS.
+config PSERIES_PLPKS_SED
+ depends on PPC_PSERIES
+ bool
+ # This option is selected by in-kernel consumers that require
+ # access to the SED PKS keystore.
+
config PAPR_SCM
depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
tristate "Support for the PAPR Storage Class Memory interface"
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index 53c3b91af2..1476c5e443 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_PPC_SVM) += svm.o
obj-$(CONFIG_FA_DUMP) += rtas-fadump.o
obj-$(CONFIG_PSERIES_PLPKS) += plpks.o
obj-$(CONFIG_PPC_SECURE_BOOT) += plpks-secvar.o
+obj-$(CONFIG_PSERIES_PLPKS_SED) += plpks_sed_ops.o
obj-$(CONFIG_SUSPEND) += suspend.o
obj-$(CONFIG_PPC_VAS) += vas.o vas-sysfs.o
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 4adca5b61d..6f2eebae7b 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -55,7 +55,8 @@ static bool find_aa_index(struct device_node *dr_node,
struct property *ala_prop,
const u32 *lmb_assoc, u32 *aa_index)
{
- u32 *assoc_arrays, new_prop_size;
+ __be32 *assoc_arrays;
+ u32 new_prop_size;
struct property *new_prop;
int aa_arrays, aa_array_entries, aa_array_sz;
int i, index;
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index d4d6de0628..4e9916bb03 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -192,9 +192,9 @@ static void free_dtl_buffers(unsigned long *time_limit)
continue;
kmem_cache_free(dtl_cache, pp->dispatch_log);
pp->dtl_ridx = 0;
- pp->dispatch_log = 0;
- pp->dispatch_log_end = 0;
- pp->dtl_curr = 0;
+ pp->dispatch_log = NULL;
+ pp->dispatch_log_end = NULL;
+ pp->dtl_curr = NULL;
if (time_limit && time_after(jiffies, *time_limit)) {
cond_resched();
@@ -223,7 +223,7 @@ static void destroy_cpu_associativity(void)
{
kfree(vcpu_associativity);
kfree(pcpu_associativity);
- vcpu_associativity = pcpu_associativity = 0;
+ vcpu_associativity = pcpu_associativity = NULL;
}
static __be32 *__get_cpu_associativity(int cpu, __be32 *cpu_assoc, int flag)
@@ -662,8 +662,12 @@ u64 pseries_paravirt_steal_clock(int cpu)
{
struct lppaca *lppaca = &lppaca_of(cpu);
- return be64_to_cpu(READ_ONCE(lppaca->enqueue_dispatch_tb)) +
- be64_to_cpu(READ_ONCE(lppaca->ready_enqueue_tb));
+ /*
+ * VPA steal time counters are reported at TB frequency. Hence do a
+ * conversion to ns before returning
+ */
+ return tb_to_ns(be64_to_cpu(READ_ONCE(lppaca->enqueue_dispatch_tb)) +
+ be64_to_cpu(READ_ONCE(lppaca->ready_enqueue_tb)));
}
#endif
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index 0161226d8f..1798f0f14d 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -61,7 +61,6 @@ static struct ctl_table nmi_wd_lpm_factor_ctl_table[] = {
.mode = 0644,
.proc_handler = proc_douintvec_minmax,
},
- {}
};
static int __init register_nmi_wd_lpm_factor_sysctl(void)
diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 4ba8245681..4448386268 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -35,6 +35,8 @@ struct pci_controller *init_phb_dynamic(struct device_node *dn)
pseries_msi_allocate_domains(phb);
+ ppc_iommu_register_device(phb);
+
/* Create EEH devices for the PHB */
eeh_phb_pe_create(phb);
@@ -76,6 +78,8 @@ int remove_phb_dynamic(struct pci_controller *phb)
}
}
+ ppc_iommu_unregister_device(phb);
+
pseries_msi_free_domains(phb);
/* Keep a reference so phb isn't freed yet */
diff --git a/arch/powerpc/platforms/pseries/plpks.c b/arch/powerpc/platforms/pseries/plpks.c
index 2d40304eb6..febe18f251 100644
--- a/arch/powerpc/platforms/pseries/plpks.c
+++ b/arch/powerpc/platforms/pseries/plpks.c
@@ -150,7 +150,7 @@ static int plpks_gen_password(void)
ospasswordlength = maxpwsize;
ospassword = kzalloc(maxpwsize, GFP_KERNEL);
if (!ospassword) {
- kfree(password);
+ kfree_sensitive(password);
return -ENOMEM;
}
memcpy(ospassword, password, ospasswordlength);
@@ -163,7 +163,7 @@ static int plpks_gen_password(void)
}
}
out:
- kfree(password);
+ kfree_sensitive(password);
return pseries_status_to_err(rc);
}
diff --git a/arch/powerpc/platforms/pseries/plpks_sed_ops.c b/arch/powerpc/platforms/pseries/plpks_sed_ops.c
new file mode 100644
index 0000000000..7c873c9589
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/plpks_sed_ops.c
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * POWER Platform specific code for non-volatile SED key access
+ * Copyright (C) 2022 IBM Corporation
+ *
+ * Define operations for SED Opal to read/write keys
+ * from POWER LPAR Platform KeyStore(PLPKS).
+ *
+ * Self Encrypting Drives(SED) key storage using PLPKS
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/ioctl.h>
+#include <linux/sed-opal-key.h>
+#include <asm/plpks.h>
+
+static bool plpks_sed_initialized = false;
+static bool plpks_sed_available = false;
+
+/*
+ * structure that contains all SED data
+ */
+struct plpks_sed_object_data {
+ u_char version;
+ u_char pad1[7];
+ u_long authority;
+ u_long range;
+ u_int key_len;
+ u_char key[32];
+};
+
+#define PLPKS_SED_OBJECT_DATA_V0 0
+#define PLPKS_SED_MANGLED_LABEL "/default/pri"
+#define PLPKS_SED_COMPONENT "sed-opal"
+#define PLPKS_SED_KEY "opal-boot-pin"
+
+/*
+ * authority is admin1 and range is global
+ */
+#define PLPKS_SED_AUTHORITY 0x0000000900010001
+#define PLPKS_SED_RANGE 0x0000080200000001
+
+static void plpks_init_var(struct plpks_var *var, char *keyname)
+{
+ if (!plpks_sed_initialized) {
+ plpks_sed_initialized = true;
+ plpks_sed_available = plpks_is_available();
+ if (!plpks_sed_available)
+ pr_err("SED: plpks not available\n");
+ }
+
+ var->name = keyname;
+ var->namelen = strlen(keyname);
+ if (strcmp(PLPKS_SED_KEY, keyname) == 0) {
+ var->name = PLPKS_SED_MANGLED_LABEL;
+ var->namelen = strlen(keyname);
+ }
+ var->policy = PLPKS_WORLDREADABLE;
+ var->os = PLPKS_VAR_COMMON;
+ var->data = NULL;
+ var->datalen = 0;
+ var->component = PLPKS_SED_COMPONENT;
+}
+
+/*
+ * Read the SED Opal key from PLPKS given the label
+ */
+int sed_read_key(char *keyname, char *key, u_int *keylen)
+{
+ struct plpks_var var;
+ struct plpks_sed_object_data data;
+ int ret;
+ u_int len;
+
+ plpks_init_var(&var, keyname);
+
+ if (!plpks_sed_available)
+ return -EOPNOTSUPP;
+
+ var.data = (u8 *)&data;
+ var.datalen = sizeof(data);
+
+ ret = plpks_read_os_var(&var);
+ if (ret != 0)
+ return ret;
+
+ len = min_t(u16, be32_to_cpu(data.key_len), var.datalen);
+ memcpy(key, data.key, len);
+ key[len] = '\0';
+ *keylen = len;
+
+ return 0;
+}
+
+/*
+ * Write the SED Opal key to PLPKS given the label
+ */
+int sed_write_key(char *keyname, char *key, u_int keylen)
+{
+ struct plpks_var var;
+ struct plpks_sed_object_data data;
+ struct plpks_var_name vname;
+
+ plpks_init_var(&var, keyname);
+
+ if (!plpks_sed_available)
+ return -EOPNOTSUPP;
+
+ var.datalen = sizeof(struct plpks_sed_object_data);
+ var.data = (u8 *)&data;
+
+ /* initialize SED object */
+ data.version = PLPKS_SED_OBJECT_DATA_V0;
+ data.authority = cpu_to_be64(PLPKS_SED_AUTHORITY);
+ data.range = cpu_to_be64(PLPKS_SED_RANGE);
+ memset(&data.pad1, '\0', sizeof(data.pad1));
+ data.key_len = cpu_to_be32(keylen);
+ memcpy(data.key, (char *)key, keylen);
+
+ /*
+ * Key update requires remove first. The return value
+ * is ignored since it's okay if the key doesn't exist.
+ */
+ vname.namelen = var.namelen;
+ vname.name = var.name;
+ plpks_remove_var(var.component, var.os, vname);
+
+ return plpks_write_var(var);
+}
diff --git a/arch/powerpc/platforms/pseries/rtas-work-area.c b/arch/powerpc/platforms/pseries/rtas-work-area.c
index b37d52f403..7fe34bee84 100644
--- a/arch/powerpc/platforms/pseries/rtas-work-area.c
+++ b/arch/powerpc/platforms/pseries/rtas-work-area.c
@@ -184,6 +184,7 @@ machine_arch_initcall(pseries, rtas_work_area_allocator_init);
/**
* rtas_work_area_reserve_arena() - Reserve memory suitable for RTAS work areas.
+ * @limit: Upper limit for memblock allocation.
*/
void __init rtas_work_area_reserve_arena(const phys_addr_t limit)
{