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

Pull powerpc updates from Ben Herrenschmidt:
 "Here's the powerpc batch for this merge window.  Some of the
  highlights are:

   - A bunch of endian fixes ! We don't have full LE support yet in that
     release but this contains a lot of fixes all over arch/powerpc to
     use the proper accessors, call the firmware with the right endian
     mode, etc...

   - A few updates to our "powernv" platform (non-virtualized, the one
     to run KVM on), among other, support for bridging the P8 LPC bus
     for UARTs, support and some EEH fixes.

   - Some mpc51xx clock API cleanups in preparation for a clock API
     overhaul

   - A pile of cleanups of our old math emulation code, including better
     support for using it to emulate optional FP instructions on
     embedded chips that otherwise have a HW FPU.

   - Some infrastructure in selftest, for powerpc now, but could be
     generalized, initially used by some tests for our perf instruction
     counting code.

   - A pile of fixes for hotplug on pseries (that was seriously
     bitrotting)

   - The usual slew of freescale embedded updates, new boards, 64-bit
     hiberation support, e6500 core PMU support, etc..."

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (146 commits)
  powerpc: Correct FSCR bit definitions
  powerpc/xmon: Fix printing of set of CPUs in xmon
  powerpc/pseries: Move lparcfg.c to platforms/pseries
  powerpc/powernv: Return secondary CPUs to firmware on kexec
  powerpc/btext: Fix CONFIG_PPC_EARLY_DEBUG_BOOTX on ppc32
  powerpc: Cleanup handling of the DSCR bit in the FSCR register
  powerpc/pseries: Child nodes are not detached by dlpar_detach_node
  powerpc/pseries: Add mising of_node_put in delete_dt_node
  powerpc/pseries: Make dlpar_configure_connector parent node aware
  powerpc/pseries: Do all node initialization in dlpar_parse_cc_node
  powerpc/pseries: Fix parsing of initial node path in update_dt_node
  powerpc/pseries: Pack update_props_workarea to map correctly to rtas buffer header
  powerpc/pseries: Fix over writing of rtas return code in update_dt_node
  powerpc/pseries: Fix creation of loop in device node property list
  powerpc: Skip emulating & leave interrupts off for kernel program checks
  powerpc: Add more exception trampolines for hypervisor exceptions
  powerpc: Fix location and rename exception trampolines
  powerpc: Add more trap names to xmon
  powerpc/pseries: Add a warning in the case of cross-cpu VPA registration
  powerpc: Update the 00-Index in Documentation/powerpc
  ...
This commit is contained in:
Linus Torvalds
2013-09-06 10:49:42 -07:00
192 changed files with 4881 additions and 1775 deletions

View File

@@ -443,8 +443,12 @@ good_area:
regs, address);
#ifdef CONFIG_PPC_SMLPAR
if (firmware_has_feature(FW_FEATURE_CMO)) {
u32 page_ins;
preempt_disable();
get_lppaca()->page_ins += (1 << PAGE_FACTOR);
page_ins = be32_to_cpu(get_lppaca()->page_ins);
page_ins += 1 << PAGE_FACTOR;
get_lppaca()->page_ins = cpu_to_be32(page_ins);
preempt_enable();
}
#endif /* CONFIG_PPC_SMLPAR */

View File

@@ -117,8 +117,8 @@ static int gup_pud_range(pgd_t pgd, unsigned long addr, unsigned long end,
return 1;
}
int get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages)
int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages)
{
struct mm_struct *mm = current->mm;
unsigned long addr, len, end;
@@ -135,7 +135,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
start, len)))
goto slow_irqon;
return 0;
pr_devel(" aligned: %lx .. %lx\n", start, end);
@@ -166,30 +166,35 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
(void *)pgd_val(pgd));
next = pgd_addr_end(addr, end);
if (pgd_none(pgd))
goto slow;
break;
if (pgd_huge(pgd)) {
if (!gup_hugepte((pte_t *)pgdp, PGDIR_SIZE, addr, next,
write, pages, &nr))
goto slow;
break;
} else if (is_hugepd(pgdp)) {
if (!gup_hugepd((hugepd_t *)pgdp, PGDIR_SHIFT,
addr, next, write, pages, &nr))
goto slow;
break;
} else if (!gup_pud_range(pgd, addr, next, write, pages, &nr))
goto slow;
break;
} while (pgdp++, addr = next, addr != end);
local_irq_enable();
VM_BUG_ON(nr != (end - start) >> PAGE_SHIFT);
return nr;
}
{
int ret;
int get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages)
{
struct mm_struct *mm = current->mm;
int nr, ret;
slow:
local_irq_enable();
slow_irqon:
start &= PAGE_MASK;
nr = __get_user_pages_fast(start, nr_pages, write, pages);
ret = nr;
if (nr < nr_pages) {
pr_devel(" slow path ! nr = %d\n", nr);
/* Try to get the remaining pages with get_user_pages */
@@ -198,7 +203,7 @@ slow_irqon:
down_read(&mm->mmap_sem);
ret = get_user_pages(current, mm, start,
(end - start) >> PAGE_SHIFT, write, 0, pages, NULL);
nr_pages - nr, write, 0, pages, NULL);
up_read(&mm->mmap_sem);
/* Have to be a bit careful with return values */
@@ -208,9 +213,9 @@ slow_irqon:
else
ret += nr;
}
return ret;
}
return ret;
}
#endif /* __HAVE_ARCH_PTE_SPECIAL */

View File

@@ -907,7 +907,7 @@ static int subpage_protection(struct mm_struct *mm, unsigned long ea)
if (ea >= spt->maxaddr)
return 0;
if (ea < 0x100000000) {
if (ea < 0x100000000UL) {
/* addresses below 4GB use spt->low_prot */
sbpm = spt->low_prot;
} else {

View File

@@ -514,7 +514,7 @@ static int add_system_ram_resources(void)
res->name = "System RAM";
res->start = base;
res->end = base + size - 1;
res->flags = IORESOURCE_MEM;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
WARN_ON(request_resource(&iomem_resource, res) < 0);
}
}

View File

@@ -58,7 +58,7 @@ static int form1_affinity;
#define MAX_DISTANCE_REF_POINTS 4
static int distance_ref_points_depth;
static const unsigned int *distance_ref_points;
static const __be32 *distance_ref_points;
static int distance_lookup_table[MAX_NUMNODES][MAX_DISTANCE_REF_POINTS];
/*
@@ -179,7 +179,7 @@ static void unmap_cpu_from_node(unsigned long cpu)
#endif /* CONFIG_HOTPLUG_CPU || CONFIG_PPC_SPLPAR */
/* must hold reference to node during call */
static const int *of_get_associativity(struct device_node *dev)
static const __be32 *of_get_associativity(struct device_node *dev)
{
return of_get_property(dev, "ibm,associativity", NULL);
}
@@ -189,9 +189,9 @@ static const int *of_get_associativity(struct device_node *dev)
* it exists (the property exists only in kexec/kdump kernels,
* added by kexec-tools)
*/
static const u32 *of_get_usable_memory(struct device_node *memory)
static const __be32 *of_get_usable_memory(struct device_node *memory)
{
const u32 *prop;
const __be32 *prop;
u32 len;
prop = of_get_property(memory, "linux,drconf-usable-memory", &len);
if (!prop || len < sizeof(unsigned int))
@@ -219,7 +219,7 @@ int __node_distance(int a, int b)
}
static void initialize_distance_lookup_table(int nid,
const unsigned int *associativity)
const __be32 *associativity)
{
int i;
@@ -227,29 +227,32 @@ static void initialize_distance_lookup_table(int nid,
return;
for (i = 0; i < distance_ref_points_depth; i++) {
distance_lookup_table[nid][i] =
associativity[distance_ref_points[i]];
const __be32 *entry;
entry = &associativity[be32_to_cpu(distance_ref_points[i])];
distance_lookup_table[nid][i] = of_read_number(entry, 1);
}
}
/* Returns nid in the range [0..MAX_NUMNODES-1], or -1 if no useful numa
* info is found.
*/
static int associativity_to_nid(const unsigned int *associativity)
static int associativity_to_nid(const __be32 *associativity)
{
int nid = -1;
if (min_common_depth == -1)
goto out;
if (associativity[0] >= min_common_depth)
nid = associativity[min_common_depth];
if (of_read_number(associativity, 1) >= min_common_depth)
nid = of_read_number(&associativity[min_common_depth], 1);
/* POWER4 LPAR uses 0xffff as invalid node */
if (nid == 0xffff || nid >= MAX_NUMNODES)
nid = -1;
if (nid > 0 && associativity[0] >= distance_ref_points_depth)
if (nid > 0 &&
of_read_number(associativity, 1) >= distance_ref_points_depth)
initialize_distance_lookup_table(nid, associativity);
out:
@@ -262,7 +265,7 @@ out:
static int of_node_to_nid_single(struct device_node *device)
{
int nid = -1;
const unsigned int *tmp;
const __be32 *tmp;
tmp = of_get_associativity(device);
if (tmp)
@@ -334,7 +337,7 @@ static int __init find_min_common_depth(void)
}
if (form1_affinity) {
depth = distance_ref_points[0];
depth = of_read_number(distance_ref_points, 1);
} else {
if (distance_ref_points_depth < 2) {
printk(KERN_WARNING "NUMA: "
@@ -342,7 +345,7 @@ static int __init find_min_common_depth(void)
goto err;
}
depth = distance_ref_points[1];
depth = of_read_number(&distance_ref_points[1], 1);
}
/*
@@ -376,12 +379,12 @@ static void __init get_n_mem_cells(int *n_addr_cells, int *n_size_cells)
of_node_put(memory);
}
static unsigned long read_n_cells(int n, const unsigned int **buf)
static unsigned long read_n_cells(int n, const __be32 **buf)
{
unsigned long result = 0;
while (n--) {
result = (result << 32) | **buf;
result = (result << 32) | of_read_number(*buf, 1);
(*buf)++;
}
return result;
@@ -391,17 +394,17 @@ static unsigned long read_n_cells(int n, const unsigned int **buf)
* Read the next memblock list entry from the ibm,dynamic-memory property
* and return the information in the provided of_drconf_cell structure.
*/
static void read_drconf_cell(struct of_drconf_cell *drmem, const u32 **cellp)
static void read_drconf_cell(struct of_drconf_cell *drmem, const __be32 **cellp)
{
const u32 *cp;
const __be32 *cp;
drmem->base_addr = read_n_cells(n_mem_addr_cells, cellp);
cp = *cellp;
drmem->drc_index = cp[0];
drmem->reserved = cp[1];
drmem->aa_index = cp[2];
drmem->flags = cp[3];
drmem->drc_index = of_read_number(cp, 1);
drmem->reserved = of_read_number(&cp[1], 1);
drmem->aa_index = of_read_number(&cp[2], 1);
drmem->flags = of_read_number(&cp[3], 1);
*cellp = cp + 4;
}
@@ -413,16 +416,16 @@ static void read_drconf_cell(struct of_drconf_cell *drmem, const u32 **cellp)
* list entries followed by N memblock list entries. Each memblock list entry
* contains information as laid out in the of_drconf_cell struct above.
*/
static int of_get_drconf_memory(struct device_node *memory, const u32 **dm)
static int of_get_drconf_memory(struct device_node *memory, const __be32 **dm)
{
const u32 *prop;
const __be32 *prop;
u32 len, entries;
prop = of_get_property(memory, "ibm,dynamic-memory", &len);
if (!prop || len < sizeof(unsigned int))
return 0;
entries = *prop++;
entries = of_read_number(prop++, 1);
/* Now that we know the number of entries, revalidate the size
* of the property read in to ensure we have everything
@@ -440,7 +443,7 @@ static int of_get_drconf_memory(struct device_node *memory, const u32 **dm)
*/
static u64 of_get_lmb_size(struct device_node *memory)
{
const u32 *prop;
const __be32 *prop;
u32 len;
prop = of_get_property(memory, "ibm,lmb-size", &len);
@@ -453,7 +456,7 @@ static u64 of_get_lmb_size(struct device_node *memory)
struct assoc_arrays {
u32 n_arrays;
u32 array_sz;
const u32 *arrays;
const __be32 *arrays;
};
/*
@@ -469,15 +472,15 @@ struct assoc_arrays {
static int of_get_assoc_arrays(struct device_node *memory,
struct assoc_arrays *aa)
{
const u32 *prop;
const __be32 *prop;
u32 len;
prop = of_get_property(memory, "ibm,associativity-lookup-arrays", &len);
if (!prop || len < 2 * sizeof(unsigned int))
return -1;
aa->n_arrays = *prop++;
aa->array_sz = *prop++;
aa->n_arrays = of_read_number(prop++, 1);
aa->array_sz = of_read_number(prop++, 1);
/* Now that we know the number of arrays and size of each array,
* revalidate the size of the property read in.
@@ -504,7 +507,7 @@ static int of_drconf_to_nid_single(struct of_drconf_cell *drmem,
!(drmem->flags & DRCONF_MEM_AI_INVALID) &&
drmem->aa_index < aa->n_arrays) {
index = drmem->aa_index * aa->array_sz + min_common_depth - 1;
nid = aa->arrays[index];
nid = of_read_number(&aa->arrays[index], 1);
if (nid == 0xffff || nid >= MAX_NUMNODES)
nid = default_nid;
@@ -595,7 +598,7 @@ static unsigned long __init numa_enforce_memory_limit(unsigned long start,
* Reads the counter for a given entry in
* linux,drconf-usable-memory property
*/
static inline int __init read_usm_ranges(const u32 **usm)
static inline int __init read_usm_ranges(const __be32 **usm)
{
/*
* For each lmb in ibm,dynamic-memory a corresponding
@@ -612,7 +615,7 @@ static inline int __init read_usm_ranges(const u32 **usm)
*/
static void __init parse_drconf_memory(struct device_node *memory)
{
const u32 *uninitialized_var(dm), *usm;
const __be32 *uninitialized_var(dm), *usm;
unsigned int n, rc, ranges, is_kexec_kdump = 0;
unsigned long lmb_size, base, size, sz;
int nid;
@@ -721,7 +724,7 @@ static int __init parse_numa_properties(void)
unsigned long size;
int nid;
int ranges;
const unsigned int *memcell_buf;
const __be32 *memcell_buf;
unsigned int len;
memcell_buf = of_get_property(memory,
@@ -1106,7 +1109,7 @@ early_param("numa", early_numa);
static int hot_add_drconf_scn_to_nid(struct device_node *memory,
unsigned long scn_addr)
{
const u32 *dm;
const __be32 *dm;
unsigned int drconf_cell_cnt, rc;
unsigned long lmb_size;
struct assoc_arrays aa;
@@ -1159,7 +1162,7 @@ int hot_add_node_scn_to_nid(unsigned long scn_addr)
for_each_node_by_type(memory, "memory") {
unsigned long start, size;
int ranges;
const unsigned int *memcell_buf;
const __be32 *memcell_buf;
unsigned int len;
memcell_buf = of_get_property(memory, "reg", &len);
@@ -1232,7 +1235,7 @@ static u64 hot_add_drconf_memory_max(void)
struct device_node *memory = NULL;
unsigned int drconf_cell_cnt = 0;
u64 lmb_size = 0;
const u32 *dm = 0;
const __be32 *dm = 0;
memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
if (memory) {
@@ -1337,40 +1340,41 @@ static int update_cpu_associativity_changes_mask(void)
* Convert the associativity domain numbers returned from the hypervisor
* to the sequence they would appear in the ibm,associativity property.
*/
static int vphn_unpack_associativity(const long *packed, unsigned int *unpacked)
static int vphn_unpack_associativity(const long *packed, __be32 *unpacked)
{
int i, nr_assoc_doms = 0;
const u16 *field = (const u16*) packed;
const __be16 *field = (const __be16 *) packed;
#define VPHN_FIELD_UNUSED (0xffff)
#define VPHN_FIELD_MSB (0x8000)
#define VPHN_FIELD_MASK (~VPHN_FIELD_MSB)
for (i = 1; i < VPHN_ASSOC_BUFSIZE; i++) {
if (*field == VPHN_FIELD_UNUSED) {
if (be16_to_cpup(field) == VPHN_FIELD_UNUSED) {
/* All significant fields processed, and remaining
* fields contain the reserved value of all 1's.
* Just store them.
*/
unpacked[i] = *((u32*)field);
unpacked[i] = *((__be32 *)field);
field += 2;
} else if (*field & VPHN_FIELD_MSB) {
} else if (be16_to_cpup(field) & VPHN_FIELD_MSB) {
/* Data is in the lower 15 bits of this field */
unpacked[i] = *field & VPHN_FIELD_MASK;
unpacked[i] = cpu_to_be32(
be16_to_cpup(field) & VPHN_FIELD_MASK);
field++;
nr_assoc_doms++;
} else {
/* Data is in the lower 15 bits of this field
* concatenated with the next 16 bit field
*/
unpacked[i] = *((u32*)field);
unpacked[i] = *((__be32 *)field);
field += 2;
nr_assoc_doms++;
}
}
/* The first cell contains the length of the property */
unpacked[0] = nr_assoc_doms;
unpacked[0] = cpu_to_be32(nr_assoc_doms);
return nr_assoc_doms;
}
@@ -1379,7 +1383,7 @@ static int vphn_unpack_associativity(const long *packed, unsigned int *unpacked)
* Retrieve the new associativity information for a virtual processor's
* home node.
*/
static long hcall_vphn(unsigned long cpu, unsigned int *associativity)
static long hcall_vphn(unsigned long cpu, __be32 *associativity)
{
long rc;
long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
@@ -1393,7 +1397,7 @@ static long hcall_vphn(unsigned long cpu, unsigned int *associativity)
}
static long vphn_get_associativity(unsigned long cpu,
unsigned int *associativity)
__be32 *associativity)
{
long rc;
@@ -1450,7 +1454,7 @@ int arch_update_cpu_topology(void)
{
unsigned int cpu, sibling, changed = 0;
struct topology_update_data *updates, *ud;
unsigned int associativity[VPHN_ASSOC_BUFSIZE] = {0};
__be32 associativity[VPHN_ASSOC_BUFSIZE] = {0};
cpumask_t updated_cpus;
struct device *dev;
int weight, new_nid, i = 0;
@@ -1609,7 +1613,7 @@ int start_topology_update(void)
#endif
}
} else if (firmware_has_feature(FW_FEATURE_VPHN) &&
get_lppaca()->shared_proc) {
lppaca_shared_proc(get_lppaca())) {
if (!vphn_enabled) {
prrn_enabled = 0;
vphn_enabled = 1;

View File

@@ -66,8 +66,10 @@ static inline void slb_shadow_update(unsigned long ea, int ssize,
* we only update the current CPU's SLB shadow buffer.
*/
get_slb_shadow()->save_area[entry].esid = 0;
get_slb_shadow()->save_area[entry].vsid = mk_vsid_data(ea, ssize, flags);
get_slb_shadow()->save_area[entry].esid = mk_esid_data(ea, ssize, entry);
get_slb_shadow()->save_area[entry].vsid =
cpu_to_be64(mk_vsid_data(ea, ssize, flags));
get_slb_shadow()->save_area[entry].esid =
cpu_to_be64(mk_esid_data(ea, ssize, entry));
}
static inline void slb_shadow_clear(unsigned long entry)
@@ -112,7 +114,8 @@ static void __slb_flush_and_rebolt(void)
} else {
/* Update stack entry; others don't change */
slb_shadow_update(get_paca()->kstack, mmu_kernel_ssize, lflags, 2);
ksp_vsid_data = get_slb_shadow()->save_area[2].vsid;
ksp_vsid_data =
be64_to_cpu(get_slb_shadow()->save_area[2].vsid);
}
/* We need to do this all in asm, so we're sure we don't touch

View File

@@ -105,7 +105,7 @@ static void subpage_prot_clear(unsigned long addr, unsigned long len)
limit = spt->maxaddr;
for (; addr < limit; addr = next) {
next = pmd_addr_end(addr, limit);
if (addr < 0x100000000) {
if (addr < 0x100000000UL) {
spm = spt->low_prot;
} else {
spm = spt->protptrs[addr >> SBP_L3_SHIFT];
@@ -219,7 +219,7 @@ long sys_subpage_prot(unsigned long addr, unsigned long len, u32 __user *map)
for (limit = addr + len; addr < limit; addr = next) {
next = pmd_addr_end(addr, limit);
err = -ENOMEM;
if (addr < 0x100000000) {
if (addr < 0x100000000UL) {
spm = spt->low_prot;
} else {
spm = spt->protptrs[addr >> SBP_L3_SHIFT];