Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull powerpc fixes from Ben Herrenschmidt:
 "Uli's patch fixes a regression in ptrace caused by a mis-merge of a
  previous LE patch.  The rest are all more endian fixes, all fairly
  trivial, found during testing of 3.13-rc's"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/powernv: Fix OPAL LPC access in Little Endian
  powerpc/powernv: Fix endian issue in opal_xscom_read
  powerpc: Fix endian issues in crash dump code
  powerpc/pseries: Fix endian issues in MSI code
  powerpc/pseries: Fix PCIE link speed endian issue
  powerpc/pseries: Fix endian issues in nvram code
  powerpc/pseries: Fix endian issues in /proc/ppc64/lparcfg
  powerpc: Fix topology core_id endian issue on LE builds
  powerpc: Fix endian issue in setup-common.c
  powerpc: PTRACE_PEEKUSR always returns FPR0

arch/powerpc/include/asm/opal.h

@@ -720,13 +720,13 @@ int64_t opal_pci_next_error(uint64_t phb_id, uint64_t *first_frozen_pe,
 int64_t opal_pci_poll(uint64_t phb_id);
 int64_t opal_return_cpu(void);
 
-int64_t opal_xscom_read(uint32_t gcid, uint32_t pcb_addr, uint64_t *val);
+int64_t opal_xscom_read(uint32_t gcid, uint32_t pcb_addr, __be64 *val);
 int64_t opal_xscom_write(uint32_t gcid, uint32_t pcb_addr, uint64_t val);
 
 int64_t opal_lpc_write(uint32_t chip_id, enum OpalLPCAddressType addr_type,
 		       uint32_t addr, uint32_t data, uint32_t sz);
 int64_t opal_lpc_read(uint32_t chip_id, enum OpalLPCAddressType addr_type,
-		      uint32_t addr, uint32_t *data, uint32_t sz);
+		      uint32_t addr, __be32 *data, uint32_t sz);
 int64_t opal_validate_flash(uint64_t buffer, uint32_t *size, uint32_t *result);
 int64_t opal_manage_flash(uint8_t op);
 int64_t opal_update_flash(uint64_t blk_list);

arch/powerpc/kernel/crash_dump.c

@@ -124,15 +124,15 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
 void crash_free_reserved_phys_range(unsigned long begin, unsigned long end)
 {
 	unsigned long addr;
-	const u32 *basep, *sizep;
+	const __be32 *basep, *sizep;
 	unsigned int rtas_start = 0, rtas_end = 0;
 
 	basep = of_get_property(rtas.dev, "linux,rtas-base", NULL);
 	sizep = of_get_property(rtas.dev, "rtas-size", NULL);
 
 	if (basep && sizep) {
-		rtas_start = *basep;
+		rtas_start = be32_to_cpup(basep);
-		rtas_end = *basep + *sizep;
+		rtas_end = rtas_start + be32_to_cpup(sizep);
 	}
 
 	for (addr = begin; addr < end; addr += PAGE_SIZE) {

arch/powerpc/kernel/ptrace.c

@@ -1555,7 +1555,7 @@ long arch_ptrace(struct task_struct *child, long request,
 
 			flush_fp_to_thread(child);
 			if (fpidx < (PT_FPSCR - PT_FPR0))
-				memcpy(&tmp, &child->thread.fp_state.fpr,
+				memcpy(&tmp, &child->thread.TS_FPR(fpidx),
 				       sizeof(long));
 			else
 				tmp = child->thread.fp_state.fpscr;
@@ -1588,7 +1588,7 @@ long arch_ptrace(struct task_struct *child, long request,
 
 			flush_fp_to_thread(child);
 			if (fpidx < (PT_FPSCR - PT_FPR0))
-				memcpy(&child->thread.fp_state.fpr, &data,
+				memcpy(&child->thread.TS_FPR(fpidx), &data,
 				       sizeof(long));
 			else
 				child->thread.fp_state.fpscr = data;

arch/powerpc/kernel/setup-common.c

@@ -479,7 +479,7 @@ void __init smp_setup_cpu_maps(void)
 	if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR) &&
 	    (dn = of_find_node_by_path("/rtas"))) {
 		int num_addr_cell, num_size_cell, maxcpus;
-		const unsigned int *ireg;
+		const __be32 *ireg;
 
 		num_addr_cell = of_n_addr_cells(dn);
 		num_size_cell = of_n_size_cells(dn);
@@ -489,7 +489,7 @@ void __init smp_setup_cpu_maps(void)
 		if (!ireg)
 			goto out;
 
-		maxcpus = ireg[num_addr_cell + num_size_cell];
+		maxcpus = be32_to_cpup(ireg + num_addr_cell + num_size_cell);
 
 		/* Double maxcpus for processors which have SMT capability */
 		if (cpu_has_feature(CPU_FTR_SMT))

arch/powerpc/kernel/smp.c

@@ -580,7 +580,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle)
 int cpu_to_core_id(int cpu)
 {
 	struct device_node *np;
-	const int *reg;
+	const __be32 *reg;
 	int id = -1;
 
 	np = of_get_cpu_node(cpu, NULL);
@@ -591,7 +591,7 @@ int cpu_to_core_id(int cpu)
 	if (!reg)
 		goto out;
 
-	id = *reg;
+	id = be32_to_cpup(reg);
 out:
 	of_node_put(np);
 	return id;

arch/powerpc/platforms/powernv/opal-lpc.c

@@ -24,25 +24,25 @@ static int opal_lpc_chip_id = -1;
 static u8 opal_lpc_inb(unsigned long port)
 {
 	int64_t rc;
-	uint32_t data;
+	__be32 data;
 
 	if (opal_lpc_chip_id < 0 || port > 0xffff)
 		return 0xff;
 	rc = opal_lpc_read(opal_lpc_chip_id, OPAL_LPC_IO, port, &data, 1);
-	return rc ? 0xff : data;
+	return rc ? 0xff : be32_to_cpu(data);
 }
 
 static __le16 __opal_lpc_inw(unsigned long port)
 {
 	int64_t rc;
-	uint32_t data;
+	__be32 data;
 
 	if (opal_lpc_chip_id < 0 || port > 0xfffe)
 		return 0xffff;
 	if (port & 1)
 		return (__le16)opal_lpc_inb(port) << 8 | opal_lpc_inb(port + 1);
 	rc = opal_lpc_read(opal_lpc_chip_id, OPAL_LPC_IO, port, &data, 2);
-	return rc ? 0xffff : data;
+	return rc ? 0xffff : be32_to_cpu(data);
 }
 static u16 opal_lpc_inw(unsigned long port)
 {
@@ -52,7 +52,7 @@ static u16 opal_lpc_inw(unsigned long port)
 static __le32 __opal_lpc_inl(unsigned long port)
 {
 	int64_t rc;
-	uint32_t data;
+	__be32 data;
 
 	if (opal_lpc_chip_id < 0 || port > 0xfffc)
 		return 0xffffffff;
@@ -62,7 +62,7 @@ static __le32 __opal_lpc_inl(unsigned long port)
 		       (__le32)opal_lpc_inb(port + 2) <<  8 |
 			       opal_lpc_inb(port + 3);
 	rc = opal_lpc_read(opal_lpc_chip_id, OPAL_LPC_IO, port, &data, 4);
-	return rc ? 0xffffffff : data;
+	return rc ? 0xffffffff : be32_to_cpu(data);
 }
 
 static u32 opal_lpc_inl(unsigned long port)

arch/powerpc/platforms/powernv/opal-xscom.c

@@ -96,9 +96,11 @@ static int opal_scom_read(scom_map_t map, u64 reg, u64 *value)
 {
 	struct opal_scom_map *m = map;
 	int64_t rc;
+	__be64 v;
 
 	reg = opal_scom_unmangle(reg);
-	rc = opal_xscom_read(m->chip, m->addr + reg, (uint64_t *)__pa(value));
+	rc = opal_xscom_read(m->chip, m->addr + reg, (__be64 *)__pa(&v));
+	*value = be64_to_cpu(v);
 	return opal_xscom_err_xlate(rc);
 }
 

arch/powerpc/platforms/pseries/lparcfg.c

@@ -157,7 +157,7 @@ static void parse_ppp_data(struct seq_file *m)
 {
 	struct hvcall_ppp_data ppp_data;
 	struct device_node *root;
-	const int *perf_level;
+	const __be32 *perf_level;
 	int rc;
 
 	rc = h_get_ppp(&ppp_data);
@@ -201,7 +201,7 @@ static void parse_ppp_data(struct seq_file *m)
 		perf_level = of_get_property(root,
 				"ibm,partition-performance-parameters-level",
 					     NULL);
-		if (perf_level && (*perf_level >= 1)) {
+		if (perf_level && (be32_to_cpup(perf_level) >= 1)) {
 			seq_printf(m,
 			    "physical_procs_allocated_to_virtualization=%d\n",
 				   ppp_data.phys_platform_procs);
@@ -435,7 +435,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
 	int partition_potential_processors;
 	int partition_active_processors;
 	struct device_node *rtas_node;
-	const int *lrdrp = NULL;
+	const __be32 *lrdrp = NULL;
 
 	rtas_node = of_find_node_by_path("/rtas");
 	if (rtas_node)
@@ -444,7 +444,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
 	if (lrdrp == NULL) {
 		partition_potential_processors = vdso_data->processorCount;
 	} else {
-		partition_potential_processors = *(lrdrp + 4);
+		partition_potential_processors = be32_to_cpup(lrdrp + 4);
 	}
 	of_node_put(rtas_node);
 
@@ -654,7 +654,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
 	const char *model = "";
 	const char *system_id = "";
 	const char *tmp;
-	const unsigned int *lp_index_ptr;
+	const __be32 *lp_index_ptr;
 	unsigned int lp_index = 0;
 
 	seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS);
@@ -670,7 +670,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
 		lp_index_ptr = of_get_property(rootdn, "ibm,partition-no",
 					NULL);
 		if (lp_index_ptr)
-			lp_index = *lp_index_ptr;
+			lp_index = be32_to_cpup(lp_index_ptr);
 		of_node_put(rootdn);
 	}
 	seq_printf(m, "serial_number=%s\n", system_id);

arch/powerpc/platforms/pseries/msi.c

@@ -130,7 +130,8 @@ static int check_req(struct pci_dev *pdev, int nvec, char *prop_name)
 {
 	struct device_node *dn;
 	struct pci_dn *pdn;
-	const u32 *req_msi;
+	const __be32 *p;
+	u32 req_msi;
 
 	pdn = pci_get_pdn(pdev);
 	if (!pdn)
@@ -138,19 +139,20 @@ static int check_req(struct pci_dev *pdev, int nvec, char *prop_name)
 
 	dn = pdn->node;
 
-	req_msi = of_get_property(dn, prop_name, NULL);
+	p = of_get_property(dn, prop_name, NULL);
-	if (!req_msi) {
+	if (!p) {
 		pr_debug("rtas_msi: No %s on %s\n", prop_name, dn->full_name);
 		return -ENOENT;
 	}
 
-	if (*req_msi < nvec) {
+	req_msi = be32_to_cpup(p);
+	if (req_msi < nvec) {
 		pr_debug("rtas_msi: %s requests < %d MSIs\n", prop_name, nvec);
 
-		if (*req_msi == 0) /* Be paranoid */
+		if (req_msi == 0) /* Be paranoid */
 			return -ENOSPC;
 
-		return *req_msi;
+		return req_msi;
 	}
 
 	return 0;
@@ -171,7 +173,7 @@ static int check_req_msix(struct pci_dev *pdev, int nvec)
 static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
 {
 	struct device_node *dn;
-	const u32 *p;
+	const __be32 *p;
 
 	dn = of_node_get(pci_device_to_OF_node(dev));
 	while (dn) {
@@ -179,7 +181,7 @@ static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
 		if (p) {
 			pr_debug("rtas_msi: found prop on dn %s\n",
 				dn->full_name);
-			*total = *p;
+			*total = be32_to_cpup(p);
 			return dn;
 		}
 
@@ -232,13 +234,13 @@ struct msi_counts {
 static void *count_non_bridge_devices(struct device_node *dn, void *data)
 {
 	struct msi_counts *counts = data;
-	const u32 *p;
+	const __be32 *p;
 	u32 class;
 
 	pr_debug("rtas_msi: counting %s\n", dn->full_name);
 
 	p = of_get_property(dn, "class-code", NULL);
-	class = p ? *p : 0;
+	class = p ? be32_to_cpup(p) : 0;
 
 	if ((class >> 8) != PCI_CLASS_BRIDGE_PCI)
 		counts->num_devices++;
@@ -249,7 +251,7 @@ static void *count_non_bridge_devices(struct device_node *dn, void *data)
 static void *count_spare_msis(struct device_node *dn, void *data)
 {
 	struct msi_counts *counts = data;
-	const u32 *p;
+	const __be32 *p;
 	int req;
 
 	if (dn == counts->requestor)
@@ -260,11 +262,11 @@ static void *count_spare_msis(struct device_node *dn, void *data)
 		req = 0;
 		p = of_get_property(dn, "ibm,req#msi", NULL);
 		if (p)
-			req = *p;
+			req = be32_to_cpup(p);
 
 		p = of_get_property(dn, "ibm,req#msi-x", NULL);
 		if (p)
-			req = max(req, (int)*p);
+			req = max(req, (int)be32_to_cpup(p));
 	}
 
 	if (req < counts->quota)

arch/powerpc/platforms/pseries/nvram.c

@@ -43,8 +43,8 @@ static char nvram_buf[NVRW_CNT];	/* assume this is in the first 4GB */
 static DEFINE_SPINLOCK(nvram_lock);
 
 struct err_log_info {
-	int error_type;
+	__be32 error_type;
-	unsigned int seq_num;
+	__be32 seq_num;
 };
 
 struct nvram_os_partition {
@@ -79,9 +79,9 @@ static const char *pseries_nvram_os_partitions[] = {
 };
 
 struct oops_log_info {
-	u16 version;
+	__be16 version;
-	u16 report_length;
+	__be16 report_length;
-	u64 timestamp;
+	__be64 timestamp;
 } __attribute__((packed));
 
 static void oops_to_nvram(struct kmsg_dumper *dumper,
@@ -291,8 +291,8 @@ int nvram_write_os_partition(struct nvram_os_partition *part, char * buff,
 		length = part->size;
 	}
 
-	info.error_type = err_type;
+	info.error_type = cpu_to_be32(err_type);
-	info.seq_num = error_log_cnt;
+	info.seq_num = cpu_to_be32(error_log_cnt);
 
 	tmp_index = part->index;
 
@@ -364,8 +364,8 @@ int nvram_read_partition(struct nvram_os_partition *part, char *buff,
 	}
 
 	if (part->os_partition) {
-		*error_log_cnt = info.seq_num;
+		*error_log_cnt = be32_to_cpu(info.seq_num);
-		*err_type = info.error_type;
+		*err_type = be32_to_cpu(info.error_type);
 	}
 
 	return 0;
@@ -529,9 +529,9 @@ static int zip_oops(size_t text_len)
 		pr_err("nvram: logging uncompressed oops/panic report\n");
 		return -1;
 	}
-	oops_hdr->version = OOPS_HDR_VERSION;
+	oops_hdr->version = cpu_to_be16(OOPS_HDR_VERSION);
-	oops_hdr->report_length = (u16) zipped_len;
+	oops_hdr->report_length = cpu_to_be16(zipped_len);
-	oops_hdr->timestamp = get_seconds();
+	oops_hdr->timestamp = cpu_to_be64(get_seconds());
 	return 0;
 }
 
@@ -574,9 +574,9 @@ static int nvram_pstore_write(enum pstore_type_id type,
 				clobbering_unread_rtas_event())
 		return -1;
 
-	oops_hdr->version = OOPS_HDR_VERSION;
+	oops_hdr->version = cpu_to_be16(OOPS_HDR_VERSION);
-	oops_hdr->report_length = (u16) size;
+	oops_hdr->report_length = cpu_to_be16(size);
-	oops_hdr->timestamp = get_seconds();
+	oops_hdr->timestamp = cpu_to_be64(get_seconds());
 
 	if (compressed)
 		err_type = ERR_TYPE_KERNEL_PANIC_GZ;
@@ -670,16 +670,16 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type,
 		size_t length, hdr_size;
 
 		oops_hdr = (struct oops_log_info *)buff;
-		if (oops_hdr->version < OOPS_HDR_VERSION) {
+		if (be16_to_cpu(oops_hdr->version) < OOPS_HDR_VERSION) {
 			/* Old format oops header had 2-byte record size */
 			hdr_size = sizeof(u16);
-			length = oops_hdr->version;
+			length = be16_to_cpu(oops_hdr->version);
 			time->tv_sec = 0;
 			time->tv_nsec = 0;
 		} else {
 			hdr_size = sizeof(*oops_hdr);
-			length = oops_hdr->report_length;
+			length = be16_to_cpu(oops_hdr->report_length);
-			time->tv_sec = oops_hdr->timestamp;
+			time->tv_sec = be64_to_cpu(oops_hdr->timestamp);
 			time->tv_nsec = 0;
 		}
 		*buf = kmalloc(length, GFP_KERNEL);
@@ -889,13 +889,13 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
 		kmsg_dump_get_buffer(dumper, false,
 				     oops_data, oops_data_sz, &text_len);
 		err_type = ERR_TYPE_KERNEL_PANIC;
-		oops_hdr->version = OOPS_HDR_VERSION;
+		oops_hdr->version = cpu_to_be16(OOPS_HDR_VERSION);
-		oops_hdr->report_length = (u16) text_len;
+		oops_hdr->report_length = cpu_to_be16(text_len);
-		oops_hdr->timestamp = get_seconds();
+		oops_hdr->timestamp = cpu_to_be64(get_seconds());
 	}
 
 	(void) nvram_write_os_partition(&oops_log_partition, oops_buf,
-		(int) (sizeof(*oops_hdr) + oops_hdr->report_length), err_type,
+		(int) (sizeof(*oops_hdr) + text_len), err_type,
 		++oops_count);
 
 	spin_unlock_irqrestore(&lock, flags);

arch/powerpc/platforms/pseries/pci.c

@@ -113,7 +113,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
 {
 	struct device_node *dn, *pdn;
 	struct pci_bus *bus;
-	const uint32_t *pcie_link_speed_stats;
+	const __be32 *pcie_link_speed_stats;
 
 	bus = bridge->bus;
 
@@ -122,7 +122,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
 		return 0;
 
 	for (pdn = dn; pdn != NULL; pdn = of_get_next_parent(pdn)) {
-		pcie_link_speed_stats = (const uint32_t *) of_get_property(pdn,
+		pcie_link_speed_stats = of_get_property(pdn,
 			"ibm,pcie-link-speed-stats", NULL);
 		if (pcie_link_speed_stats)
 			break;
@@ -135,7 +135,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
 		return 0;
 	}
 
-	switch (pcie_link_speed_stats[0]) {
+	switch (be32_to_cpup(pcie_link_speed_stats)) {
 	case 0x01:
 		bus->max_bus_speed = PCIE_SPEED_2_5GT;
 		break;
@@ -147,7 +147,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
 		break;
 	}
 
-	switch (pcie_link_speed_stats[1]) {
+	switch (be32_to_cpup(pcie_link_speed_stats)) {
 	case 0x01:
 		bus->cur_bus_speed = PCIE_SPEED_2_5GT;
 		break;