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-rw-r--r--arch/ia64/kernel/acpi.c32
-rw-r--r--arch/ia64/kernel/asm-offsets.c16
-rw-r--r--arch/ia64/kernel/efi.c156
-rw-r--r--arch/ia64/kernel/efi_stub.S2
-rw-r--r--arch/ia64/kernel/entry.S2
-rw-r--r--arch/ia64/kernel/entry.h1
-rw-r--r--arch/ia64/kernel/irq_ia64.c19
-rw-r--r--arch/ia64/kernel/mca_asm.S28
-rw-r--r--arch/ia64/kernel/perfmon.c10
-rw-r--r--arch/ia64/kernel/sal.c6
-rw-r--r--arch/ia64/kernel/setup.c1
-rw-r--r--arch/ia64/kernel/uncached.c200
12 files changed, 276 insertions, 197 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 58c93a3..ca16d95 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -68,8 +68,6 @@ EXPORT_SYMBOL(pm_power_off);
unsigned char acpi_kbd_controller_present = 1;
unsigned char acpi_legacy_devices;
-static unsigned int __initdata acpi_madt_rev;
-
unsigned int acpi_cpei_override;
unsigned int acpi_cpei_phys_cpuid;
@@ -243,6 +241,8 @@ acpi_parse_iosapic(acpi_table_entry_header * header, const unsigned long end)
return iosapic_init(iosapic->address, iosapic->global_irq_base);
}
+static unsigned int __initdata acpi_madt_rev;
+
static int __init
acpi_parse_plat_int_src(acpi_table_entry_header * header,
const unsigned long end)
@@ -415,9 +415,6 @@ static int __initdata srat_num_cpus; /* number of cpus */
static u32 __devinitdata pxm_flag[PXM_FLAG_LEN];
#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
-/* maps to convert between proximity domain and logical node ID */
-int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
-int __initdata nid_to_pxm_map[MAX_NUMNODES];
static struct acpi_table_slit __initdata *slit_table;
static int get_processor_proximity_domain(struct acpi_table_processor_affinity *pa)
@@ -533,22 +530,17 @@ void __init acpi_numa_arch_fixup(void)
* MCD - This can probably be dropped now. No need for pxm ID to node ID
* mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
*/
- /* calculate total number of nodes in system from PXM bitmap */
- memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
- memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
nodes_clear(node_online_map);
for (i = 0; i < MAX_PXM_DOMAINS; i++) {
if (pxm_bit_test(i)) {
- int nid = num_online_nodes();
- pxm_to_nid_map[i] = nid;
- nid_to_pxm_map[nid] = i;
+ int nid = acpi_map_pxm_to_node(i);
node_set_online(nid);
}
}
/* set logical node id in memory chunk structure */
for (i = 0; i < num_node_memblks; i++)
- node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
+ node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
/* assign memory bank numbers for each chunk on each node */
for_each_online_node(i) {
@@ -562,7 +554,7 @@ void __init acpi_numa_arch_fixup(void)
/* set logical node id in cpu structure */
for (i = 0; i < srat_num_cpus; i++)
- node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
+ node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
printk(KERN_INFO "Number of logical nodes in system = %d\n",
num_online_nodes());
@@ -575,11 +567,11 @@ void __init acpi_numa_arch_fixup(void)
for (i = 0; i < slit_table->localities; i++) {
if (!pxm_bit_test(i))
continue;
- node_from = pxm_to_nid_map[i];
+ node_from = pxm_to_node(i);
for (j = 0; j < slit_table->localities; j++) {
if (!pxm_bit_test(j))
continue;
- node_to = pxm_to_nid_map[j];
+ node_to = pxm_to_node(j);
node_distance(node_from, node_to) =
slit_table->entry[i * slit_table->localities + j];
}
@@ -626,7 +618,7 @@ EXPORT_SYMBOL(acpi_unregister_gsi);
static int __init acpi_parse_fadt(unsigned long phys_addr, unsigned long size)
{
struct acpi_table_header *fadt_header;
- struct fadt_descriptor_rev2 *fadt;
+ struct fadt_descriptor *fadt;
if (!phys_addr || !size)
return -EINVAL;
@@ -635,7 +627,7 @@ static int __init acpi_parse_fadt(unsigned long phys_addr, unsigned long size)
if (fadt_header->revision != 3)
return -ENODEV; /* Only deal with ACPI 2.0 FADT */
- fadt = (struct fadt_descriptor_rev2 *)fadt_header;
+ fadt = (struct fadt_descriptor *)fadt_header;
if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER))
acpi_kbd_controller_present = 0;
@@ -785,9 +777,9 @@ int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
/*
* Assuming that the container driver would have set the proximity
- * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag
+ * domain and would have initialized pxm_to_node(pxm_id) && pxm_flag
*/
- node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_nid_map[pxm_id];
+ node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_node(pxm_id);
node_cpuid[cpu].phys_id = physid;
#endif
@@ -966,7 +958,7 @@ acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret)
if (pxm < 0)
return AE_OK;
- node = pxm_to_nid_map[pxm];
+ node = pxm_to_node(pxm);
if (node >= MAX_NUMNODES || !node_online(node) ||
cpus_empty(node_to_cpumask(node)))
diff --git a/arch/ia64/kernel/asm-offsets.c b/arch/ia64/kernel/asm-offsets.c
index 7722565..16e7b66 100644
--- a/arch/ia64/kernel/asm-offsets.c
+++ b/arch/ia64/kernel/asm-offsets.c
@@ -217,16 +217,24 @@ void foo(void)
DEFINE(IA64_MCA_CPU_INIT_STACK_OFFSET,
offsetof (struct ia64_mca_cpu, init_stack));
BLANK();
- DEFINE(IA64_SAL_OS_STATE_COMMON_OFFSET,
- offsetof (struct ia64_sal_os_state, sal_ra));
DEFINE(IA64_SAL_OS_STATE_OS_GP_OFFSET,
offsetof (struct ia64_sal_os_state, os_gp));
- DEFINE(IA64_SAL_OS_STATE_PAL_MIN_STATE_OFFSET,
- offsetof (struct ia64_sal_os_state, pal_min_state));
DEFINE(IA64_SAL_OS_STATE_PROC_STATE_PARAM_OFFSET,
offsetof (struct ia64_sal_os_state, proc_state_param));
+ DEFINE(IA64_SAL_OS_STATE_SAL_RA_OFFSET,
+ offsetof (struct ia64_sal_os_state, sal_ra));
+ DEFINE(IA64_SAL_OS_STATE_SAL_GP_OFFSET,
+ offsetof (struct ia64_sal_os_state, sal_gp));
+ DEFINE(IA64_SAL_OS_STATE_PAL_MIN_STATE_OFFSET,
+ offsetof (struct ia64_sal_os_state, pal_min_state));
+ DEFINE(IA64_SAL_OS_STATE_OS_STATUS_OFFSET,
+ offsetof (struct ia64_sal_os_state, os_status));
+ DEFINE(IA64_SAL_OS_STATE_CONTEXT_OFFSET,
+ offsetof (struct ia64_sal_os_state, context));
DEFINE(IA64_SAL_OS_STATE_SIZE,
sizeof (struct ia64_sal_os_state));
+ BLANK();
+
DEFINE(IA64_PMSA_GR_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_gr));
DEFINE(IA64_PMSA_BANK1_GR_OFFSET,
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 12cfedc..c33d0ba 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -8,6 +8,8 @@
* Copyright (C) 1999-2003 Hewlett-Packard Co.
* David Mosberger-Tang <davidm@hpl.hp.com>
* Stephane Eranian <eranian@hpl.hp.com>
+ * (c) Copyright 2006 Hewlett-Packard Development Company, L.P.
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
*
* All EFI Runtime Services are not implemented yet as EFI only
* supports physical mode addressing on SoftSDV. This is to be fixed
@@ -622,28 +624,20 @@ efi_get_iobase (void)
return 0;
}
-static efi_memory_desc_t *
-efi_memory_descriptor (unsigned long phys_addr)
+static struct kern_memdesc *
+kern_memory_descriptor (unsigned long phys_addr)
{
- void *efi_map_start, *efi_map_end, *p;
- efi_memory_desc_t *md;
- u64 efi_desc_size;
-
- efi_map_start = __va(ia64_boot_param->efi_memmap);
- efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
- efi_desc_size = ia64_boot_param->efi_memdesc_size;
+ struct kern_memdesc *md;
- for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
- md = p;
-
- if (phys_addr - md->phys_addr < (md->num_pages << EFI_PAGE_SHIFT))
+ for (md = kern_memmap; md->start != ~0UL; md++) {
+ if (phys_addr - md->start < (md->num_pages << EFI_PAGE_SHIFT))
return md;
}
return 0;
}
-static int
-efi_memmap_has_mmio (void)
+static efi_memory_desc_t *
+efi_memory_descriptor (unsigned long phys_addr)
{
void *efi_map_start, *efi_map_end, *p;
efi_memory_desc_t *md;
@@ -656,8 +650,8 @@ efi_memmap_has_mmio (void)
for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
md = p;
- if (md->type == EFI_MEMORY_MAPPED_IO)
- return 1;
+ if (phys_addr - md->phys_addr < (md->num_pages << EFI_PAGE_SHIFT))
+ return md;
}
return 0;
}
@@ -683,71 +677,125 @@ efi_mem_attributes (unsigned long phys_addr)
}
EXPORT_SYMBOL(efi_mem_attributes);
-/*
- * Determines whether the memory at phys_addr supports the desired
- * attribute (WB, UC, etc). If this returns 1, the caller can safely
- * access size bytes at phys_addr with the specified attribute.
- */
-int
-efi_mem_attribute_range (unsigned long phys_addr, unsigned long size, u64 attr)
+u64
+efi_mem_attribute (unsigned long phys_addr, unsigned long size)
{
unsigned long end = phys_addr + size;
efi_memory_desc_t *md = efi_memory_descriptor(phys_addr);
+ u64 attr;
+
+ if (!md)
+ return 0;
+
+ /*
+ * EFI_MEMORY_RUNTIME is not a memory attribute; it just tells
+ * the kernel that firmware needs this region mapped.
+ */
+ attr = md->attribute & ~EFI_MEMORY_RUNTIME;
+ do {
+ unsigned long md_end = efi_md_end(md);
+
+ if (end <= md_end)
+ return attr;
+
+ md = efi_memory_descriptor(md_end);
+ if (!md || (md->attribute & ~EFI_MEMORY_RUNTIME) != attr)
+ return 0;
+ } while (md);
+ return 0;
+}
+
+u64
+kern_mem_attribute (unsigned long phys_addr, unsigned long size)
+{
+ unsigned long end = phys_addr + size;
+ struct kern_memdesc *md;
+ u64 attr;
/*
- * Some firmware doesn't report MMIO regions in the EFI memory
- * map. The Intel BigSur (a.k.a. HP i2000) has this problem.
- * On those platforms, we have to assume UC is valid everywhere.
+ * This is a hack for ioremap calls before we set up kern_memmap.
+ * Maybe we should do efi_memmap_init() earlier instead.
*/
- if (!md || (md->attribute & attr) != attr) {
- if (attr == EFI_MEMORY_UC && !efi_memmap_has_mmio())
- return 1;
+ if (!kern_memmap) {
+ attr = efi_mem_attribute(phys_addr, size);
+ if (attr & EFI_MEMORY_WB)
+ return EFI_MEMORY_WB;
return 0;
}
+ md = kern_memory_descriptor(phys_addr);
+ if (!md)
+ return 0;
+
+ attr = md->attribute;
do {
- unsigned long md_end = efi_md_end(md);
+ unsigned long md_end = kmd_end(md);
if (end <= md_end)
- return 1;
+ return attr;
- md = efi_memory_descriptor(md_end);
- if (!md || (md->attribute & attr) != attr)
+ md = kern_memory_descriptor(md_end);
+ if (!md || md->attribute != attr)
return 0;
} while (md);
return 0;
}
+EXPORT_SYMBOL(kern_mem_attribute);
-/*
- * For /dev/mem, we only allow read & write system calls to access
- * write-back memory, because read & write don't allow the user to
- * control access size.
- */
int
valid_phys_addr_range (unsigned long phys_addr, unsigned long size)
{
- return efi_mem_attribute_range(phys_addr, size, EFI_MEMORY_WB);
+ u64 attr;
+
+ /*
+ * /dev/mem reads and writes use copy_to_user(), which implicitly
+ * uses a granule-sized kernel identity mapping. It's really
+ * only safe to do this for regions in kern_memmap. For more
+ * details, see Documentation/ia64/aliasing.txt.
+ */
+ attr = kern_mem_attribute(phys_addr, size);
+ if (attr & EFI_MEMORY_WB || attr & EFI_MEMORY_UC)
+ return 1;
+ return 0;
}
-/*
- * We allow mmap of anything in the EFI memory map that supports
- * either write-back or uncacheable access. For uncacheable regions,
- * the supported access sizes are system-dependent, and the user is
- * responsible for using the correct size.
- *
- * Note that this doesn't currently allow access to hot-added memory,
- * because that doesn't appear in the boot-time EFI memory map.
- */
int
valid_mmap_phys_addr_range (unsigned long phys_addr, unsigned long size)
{
- if (efi_mem_attribute_range(phys_addr, size, EFI_MEMORY_WB))
- return 1;
+ /*
+ * MMIO regions are often missing from the EFI memory map.
+ * We must allow mmap of them for programs like X, so we
+ * currently can't do any useful validation.
+ */
+ return 1;
+}
- if (efi_mem_attribute_range(phys_addr, size, EFI_MEMORY_UC))
- return 1;
+pgprot_t
+phys_mem_access_prot(struct file *file, unsigned long pfn, unsigned long size,
+ pgprot_t vma_prot)
+{
+ unsigned long phys_addr = pfn << PAGE_SHIFT;
+ u64 attr;
- return 0;
+ /*
+ * For /dev/mem mmap, we use user mappings, but if the region is
+ * in kern_memmap (and hence may be covered by a kernel mapping),
+ * we must use the same attribute as the kernel mapping.
+ */
+ attr = kern_mem_attribute(phys_addr, size);
+ if (attr & EFI_MEMORY_WB)
+ return pgprot_cacheable(vma_prot);
+ else if (attr & EFI_MEMORY_UC)
+ return pgprot_noncached(vma_prot);
+
+ /*
+ * Some chipsets don't support UC access to memory. If
+ * WB is supported, we prefer that.
+ */
+ if (efi_mem_attribute(phys_addr, size) & EFI_MEMORY_WB)
+ return pgprot_cacheable(vma_prot);
+
+ return pgprot_noncached(vma_prot);
}
int __init
diff --git a/arch/ia64/kernel/efi_stub.S b/arch/ia64/kernel/efi_stub.S
index 5a7fe70..a56e161 100644
--- a/arch/ia64/kernel/efi_stub.S
+++ b/arch/ia64/kernel/efi_stub.S
@@ -61,7 +61,7 @@ GLOBAL_ENTRY(efi_call_phys)
or loc3=loc3,r17
mov b6=r2
;;
- andcm r16=loc3,r16 // get psr with IT, DT, and RT bits cleared
+ andcm r16=loc3,r16 // get psr with IT, DT, and RT bits cleared
br.call.sptk.many rp=ia64_switch_mode_phys
.ret0: mov out4=in5
mov out0=in1
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index bcb80ca..32c999f 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1584,7 +1584,7 @@ sys_call_table:
data8 sys_keyctl
data8 sys_ioprio_set
data8 sys_ioprio_get // 1275
- data8 sys_ni_syscall
+ data8 sys_move_pages
data8 sys_inotify_init
data8 sys_inotify_add_watch
data8 sys_inotify_rm_watch
diff --git a/arch/ia64/kernel/entry.h b/arch/ia64/kernel/entry.h
index 78eeb07..ebc3dfb 100644
--- a/arch/ia64/kernel/entry.h
+++ b/arch/ia64/kernel/entry.h
@@ -23,6 +23,7 @@
#define PT(f) (IA64_PT_REGS_##f##_OFFSET)
#define SW(f) (IA64_SWITCH_STACK_##f##_OFFSET)
+#define SOS(f) (IA64_SAL_OS_STATE_##f##_OFFSET)
#define PT_REGS_SAVES(off) \
.unwabi 3, 'i'; \
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 6c4d59f..ef9a2b4 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -46,6 +46,10 @@
#define IRQ_DEBUG 0
+/* These can be overridden in platform_irq_init */
+int ia64_first_device_vector = IA64_DEF_FIRST_DEVICE_VECTOR;
+int ia64_last_device_vector = IA64_DEF_LAST_DEVICE_VECTOR;
+
/* default base addr of IPI table */
void __iomem *ipi_base_addr = ((void __iomem *)
(__IA64_UNCACHED_OFFSET | IA64_IPI_DEFAULT_BASE_ADDR));
@@ -60,7 +64,7 @@ __u8 isa_irq_to_vector_map[16] = {
};
EXPORT_SYMBOL(isa_irq_to_vector_map);
-static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_NUM_DEVICE_VECTORS)];
+static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_MAX_DEVICE_VECTORS)];
int
assign_irq_vector (int irq)
@@ -89,6 +93,19 @@ free_irq_vector (int vector)
printk(KERN_WARNING "%s: double free!\n", __FUNCTION__);
}
+int
+reserve_irq_vector (int vector)
+{
+ int pos;
+
+ if (vector < IA64_FIRST_DEVICE_VECTOR ||
+ vector > IA64_LAST_DEVICE_VECTOR)
+ return -EINVAL;
+
+ pos = vector - IA64_FIRST_DEVICE_VECTOR;
+ return test_and_set_bit(pos, ia64_vector_mask);
+}
+
#ifdef CONFIG_SMP
# define IS_RESCHEDULE(vec) (vec == IA64_IPI_RESCHEDULE)
#else
diff --git a/arch/ia64/kernel/mca_asm.S b/arch/ia64/kernel/mca_asm.S
index 6dff024..c1bd1fe 100644
--- a/arch/ia64/kernel/mca_asm.S
+++ b/arch/ia64/kernel/mca_asm.S
@@ -159,7 +159,7 @@ ia64_os_mca_spin:
GET_IA64_MCA_DATA(r2)
// Using MCA stack, struct ia64_sal_os_state, variable proc_state_param
;;
- add r3=IA64_MCA_CPU_MCA_STACK_OFFSET+MCA_SOS_OFFSET+IA64_SAL_OS_STATE_PROC_STATE_PARAM_OFFSET, r2
+ add r3=IA64_MCA_CPU_MCA_STACK_OFFSET+MCA_SOS_OFFSET+SOS(PROC_STATE_PARAM), r2
;;
ld8 r18=[r3] // Get processor state parameter on existing PALE_CHECK.
;;
@@ -479,9 +479,11 @@ ia64_state_save:
st8 [temp2]=r11,16 // rv_rc
mov r11=cr.iipa
;;
- st8 [temp1]=r18,16 // proc_state_param
- st8 [temp2]=r19,16 // monarch
+ st8 [temp1]=r18 // proc_state_param
+ st8 [temp2]=r19 // monarch
mov r6=IA64_KR(CURRENT)
+ add temp1=SOS(SAL_RA), regs
+ add temp2=SOS(SAL_GP), regs
;;
st8 [temp1]=r12,16 // sal_ra
st8 [temp2]=r10,16 // sal_gp
@@ -503,12 +505,14 @@ ia64_state_save:
st8 [temp2]=r11,16 // cr.iipa
mov r12=cr.iim
;;
- st8 [temp1]=r12,16 // cr.iim
+ st8 [temp1]=r12 // cr.iim
(p1) mov r12=IA64_MCA_COLD_BOOT
(p2) mov r12=IA64_INIT_WARM_BOOT
mov r6=cr.iha
+ add temp1=SOS(OS_STATUS), regs
;;
- st8 [temp2]=r6,16 // cr.iha
+ st8 [temp2]=r6 // cr.iha
+ add temp2=SOS(CONTEXT), regs
st8 [temp1]=r12 // os_status, default is cold boot
mov r6=IA64_MCA_SAME_CONTEXT
;;
@@ -820,8 +824,8 @@ ia64_state_restore:
// Restore the SAL to OS state. The previous code left regs at pt_regs.
add regs=MCA_SOS_OFFSET-MCA_PT_REGS_OFFSET, regs
;;
- add temp1=IA64_SAL_OS_STATE_COMMON_OFFSET, regs
- add temp2=IA64_SAL_OS_STATE_COMMON_OFFSET+8, regs
+ add temp1=SOS(SAL_RA), regs
+ add temp2=SOS(SAL_GP), regs
;;
ld8 r12=[temp1],16 // sal_ra
ld8 r9=[temp2],16 // sal_gp
@@ -842,8 +846,10 @@ ia64_state_restore:
;;
mov cr.itir=temp3
mov cr.iipa=temp4
- ld8 temp3=[temp1],16 // cr.iim
- ld8 temp4=[temp2],16 // cr.iha
+ ld8 temp3=[temp1] // cr.iim
+ ld8 temp4=[temp2] // cr.iha
+ add temp1=SOS(OS_STATUS), regs
+ add temp2=SOS(CONTEXT), regs
;;
mov cr.iim=temp3
mov cr.iha=temp4
@@ -916,7 +922,7 @@ ia64_state_restore:
ia64_new_stack:
add regs=MCA_PT_REGS_OFFSET, r3
- add temp2=MCA_SOS_OFFSET+IA64_SAL_OS_STATE_PAL_MIN_STATE_OFFSET, r3
+ add temp2=MCA_SOS_OFFSET+SOS(PAL_MIN_STATE), r3
mov b0=r2 // save return address
GET_IA64_MCA_DATA(temp1)
invala
@@ -1020,7 +1026,7 @@ ia64_old_stack:
ia64_set_kernel_registers:
add temp3=MCA_SP_OFFSET, r3
- add temp4=MCA_SOS_OFFSET+IA64_SAL_OS_STATE_OS_GP_OFFSET, r3
+ add temp4=MCA_SOS_OFFSET+SOS(OS_GP), r3
mov b0=r2 // save return address
GET_IA64_MCA_DATA(temp1)
;;
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 077f212..6d7bc8f 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -532,7 +532,6 @@ static ctl_table pfm_sysctl_root[] = {
static struct ctl_table_header *pfm_sysctl_header;
static int pfm_context_unload(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs);
-static int pfm_flush(struct file *filp);
#define pfm_get_cpu_var(v) __ia64_per_cpu_var(v)
#define pfm_get_cpu_data(a,b) per_cpu(a, b)
@@ -595,10 +594,11 @@ pfm_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
}
-static struct super_block *
-pfmfs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data)
+static int
+pfmfs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data,
+ struct vfsmount *mnt)
{
- return get_sb_pseudo(fs_type, "pfm:", NULL, PFMFS_MAGIC);
+ return get_sb_pseudo(fs_type, "pfm:", NULL, PFMFS_MAGIC, mnt);
}
static struct file_system_type pfm_fs_type = {
@@ -1773,7 +1773,7 @@ pfm_syswide_cleanup_other_cpu(pfm_context_t *ctx)
* When caller is self-monitoring, the context is unloaded.
*/
static int
-pfm_flush(struct file *filp)
+pfm_flush(struct file *filp, fl_owner_t id)
{
pfm_context_t *ctx;
struct task_struct *task;
diff --git a/arch/ia64/kernel/sal.c b/arch/ia64/kernel/sal.c
index 056f7a6..77fa659 100644
--- a/arch/ia64/kernel/sal.c
+++ b/arch/ia64/kernel/sal.c
@@ -227,7 +227,7 @@ static int sal_cache_flush_drops_interrupts;
static void __init
check_sal_cache_flush (void)
{
- unsigned long flags, itv;
+ unsigned long flags;
int cpu;
u64 vector;
@@ -238,9 +238,6 @@ check_sal_cache_flush (void)
* Schedule a timer interrupt, wait until it's reported, and see if
* SAL_CACHE_FLUSH drops it.
*/
- itv = ia64_get_itv();
- BUG_ON((itv & (1 << 16)) == 0);
-
ia64_set_itv(IA64_TIMER_VECTOR);
ia64_set_itm(ia64_get_itc() + 1000);
@@ -260,7 +257,6 @@ check_sal_cache_flush (void)
ia64_eoi();
}
- ia64_set_itv(itv);
local_irq_restore(flags);
put_cpu();
}
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index e4dfda1..6dba2d6 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -260,6 +260,7 @@ reserve_memory (void)
n++;
num_rsvd_regions = n;
+ BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n);
sort_regions(rsvd_region, num_rsvd_regions);
}
diff --git a/arch/ia64/kernel/uncached.c b/arch/ia64/kernel/uncached.c
index fcd2bad..5f03b9e 100644
--- a/arch/ia64/kernel/uncached.c
+++ b/arch/ia64/kernel/uncached.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2001-2005 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2001-2006 Silicon Graphics, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
@@ -29,15 +29,8 @@
#include <asm/tlbflush.h>
#include <asm/sn/arch.h>
-#define DEBUG 0
-#if DEBUG
-#define dprintk printk
-#else
-#define dprintk(x...) do { } while (0)
-#endif
-
-void __init efi_memmap_walk_uc (efi_freemem_callback_t callback);
+extern void __init efi_memmap_walk_uc(efi_freemem_callback_t, void *);
#define MAX_UNCACHED_GRANULES 5
static int allocated_granules;
@@ -60,6 +53,7 @@ static void uncached_ipi_visibility(void *data)
static void uncached_ipi_mc_drain(void *data)
{
int status;
+
status = ia64_pal_mc_drain();
if (status)
printk(KERN_WARNING "ia64_pal_mc_drain() failed with %i on "
@@ -67,30 +61,35 @@ static void uncached_ipi_mc_drain(void *data)
}
-static unsigned long
-uncached_get_new_chunk(struct gen_pool *poolp)
+/*
+ * Add a new chunk of uncached memory pages to the specified pool.
+ *
+ * @pool: pool to add new chunk of uncached memory to
+ * @nid: node id of node to allocate memory from, or -1
+ *
+ * This is accomplished by first allocating a granule of cached memory pages
+ * and then converting them to uncached memory pages.
+ */
+static int uncached_add_chunk(struct gen_pool *pool, int nid)
{
struct page *page;
- void *tmp;
int status, i;
- unsigned long addr, node;
+ unsigned long c_addr, uc_addr;
if (allocated_granules >= MAX_UNCACHED_GRANULES)
- return 0;
+ return -1;
+
+ /* attempt to allocate a granule's worth of cached memory pages */
- node = poolp->private;
- page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO,
+ page = alloc_pages_node(nid, GFP_KERNEL | __GFP_ZERO,
IA64_GRANULE_SHIFT-PAGE_SHIFT);
+ if (!page)
+ return -1;
- dprintk(KERN_INFO "get_new_chunk page %p, addr %lx\n",
- page, (unsigned long)(page-vmem_map) << PAGE_SHIFT);
+ /* convert the memory pages from cached to uncached */
- /*
- * Do magic if no mem on local node! XXX
- */
- if (!page)
- return 0;
- tmp = page_address(page);
+ c_addr = (unsigned long)page_address(page);
+ uc_addr = c_addr - PAGE_OFFSET + __IA64_UNCACHED_OFFSET;
/*
* There's a small race here where it's possible for someone to
@@ -100,76 +99,90 @@ uncached_get_new_chunk(struct gen_pool *poolp)
for (i = 0; i < (IA64_GRANULE_SIZE / PAGE_SIZE); i++)
SetPageUncached(&page[i]);
- flush_tlb_kernel_range(tmp, tmp + IA64_GRANULE_SIZE);
+ flush_tlb_kernel_range(uc_addr, uc_adddr + IA64_GRANULE_SIZE);
status = ia64_pal_prefetch_visibility(PAL_VISIBILITY_PHYSICAL);
-
- dprintk(KERN_INFO "pal_prefetch_visibility() returns %i on cpu %i\n",
- status, raw_smp_processor_id());
-
if (!status) {
status = smp_call_function(uncached_ipi_visibility, NULL, 0, 1);
if (status)
- printk(KERN_WARNING "smp_call_function failed for "
- "uncached_ipi_visibility! (%i)\n", status);
+ goto failed;
}
+ preempt_disable();
+
if (ia64_platform_is("sn2"))
- sn_flush_all_caches((unsigned long)tmp, IA64_GRANULE_SIZE);
+ sn_flush_all_caches(uc_addr, IA64_GRANULE_SIZE);
else
- flush_icache_range((unsigned long)tmp,
- (unsigned long)tmp+IA64_GRANULE_SIZE);
+ flush_icache_range(uc_addr, uc_addr + IA64_GRANULE_SIZE);
+
+ /* flush the just introduced uncached translation from the TLB */
+ local_flush_tlb_all();
+
+ preempt_enable();
ia64_pal_mc_drain();
status = smp_call_function(uncached_ipi_mc_drain, NULL, 0, 1);
if (status)
- printk(KERN_WARNING "smp_call_function failed for "
- "uncached_ipi_mc_drain! (%i)\n", status);
+ goto failed;
- addr = (unsigned long)tmp - PAGE_OFFSET + __IA64_UNCACHED_OFFSET;
+ /*
+ * The chunk of memory pages has been converted to uncached so now we
+ * can add it to the pool.
+ */
+ status = gen_pool_add(pool, uc_addr, IA64_GRANULE_SIZE, nid);
+ if (status)
+ goto failed;
allocated_granules++;
- return addr;
+ return 0;
+
+ /* failed to convert or add the chunk so give it back to the kernel */
+failed:
+ for (i = 0; i < (IA64_GRANULE_SIZE / PAGE_SIZE); i++)
+ ClearPageUncached(&page[i]);
+
+ free_pages(c_addr, IA64_GRANULE_SHIFT-PAGE_SHIFT);
+ return -1;
}
/*
* uncached_alloc_page
*
+ * @starting_nid: node id of node to start with, or -1
+ *
* Allocate 1 uncached page. Allocates on the requested node. If no
* uncached pages are available on the requested node, roundrobin starting
- * with higher nodes.
+ * with the next higher node.
*/
-unsigned long
-uncached_alloc_page(int nid)
+unsigned long uncached_alloc_page(int starting_nid)
{
- unsigned long maddr;
+ unsigned long uc_addr;
+ struct gen_pool *pool;
+ int nid;
- maddr = gen_pool_alloc(uncached_pool[nid], PAGE_SIZE);
+ if (unlikely(starting_nid >= MAX_NUMNODES))
+ return 0;
- dprintk(KERN_DEBUG "uncached_alloc_page returns %lx on node %i\n",
- maddr, nid);
+ if (starting_nid < 0)
+ starting_nid = numa_node_id();
+ nid = starting_nid;
- /*
- * If no memory is availble on our local node, try the
- * remaining nodes in the system.
- */
- if (!maddr) {
- int i;
-
- for (i = MAX_NUMNODES - 1; i >= 0; i--) {
- if (i == nid || !node_online(i))
- continue;
- maddr = gen_pool_alloc(uncached_pool[i], PAGE_SIZE);
- dprintk(KERN_DEBUG "uncached_alloc_page alternate search "
- "returns %lx on node %i\n", maddr, i);
- if (maddr) {
- break;
- }
- }
- }
+ do {
+ if (!node_online(nid))
+ continue;
+ pool = uncached_pool[nid];
+ if (pool == NULL)
+ continue;
+ do {
+ uc_addr = gen_pool_alloc(pool, PAGE_SIZE);
+ if (uc_addr != 0)
+ return uc_addr;
+ } while (uncached_add_chunk(pool, nid) == 0);
+
+ } while ((nid = (nid + 1) % MAX_NUMNODES) != starting_nid);
- return maddr;
+ return 0;
}
EXPORT_SYMBOL(uncached_alloc_page);
@@ -177,21 +190,22 @@ EXPORT_SYMBOL(uncached_alloc_page);
/*
* uncached_free_page
*
+ * @uc_addr: uncached address of page to free
+ *
* Free a single uncached page.
*/
-void
-uncached_free_page(unsigned long maddr)
+void uncached_free_page(unsigned long uc_addr)
{
- int node;
-
- node = paddr_to_nid(maddr - __IA64_UNCACHED_OFFSET);
+ int nid = paddr_to_nid(uc_addr - __IA64_UNCACHED_OFFSET);
+ struct gen_pool *pool = uncached_pool[nid];
- dprintk(KERN_DEBUG "uncached_free_page(%lx) on node %i\n", maddr, node);
+ if (unlikely(pool == NULL))
+ return;
- if ((maddr & (0XFUL << 60)) != __IA64_UNCACHED_OFFSET)
- panic("uncached_free_page invalid address %lx\n", maddr);
+ if ((uc_addr & (0XFUL << 60)) != __IA64_UNCACHED_OFFSET)
+ panic("uncached_free_page invalid address %lx\n", uc_addr);
- gen_pool_free(uncached_pool[node], maddr, PAGE_SIZE);
+ gen_pool_free(pool, uc_addr, PAGE_SIZE);
}
EXPORT_SYMBOL(uncached_free_page);
@@ -199,43 +213,39 @@ EXPORT_SYMBOL(uncached_free_page);
/*
* uncached_build_memmap,
*
+ * @uc_start: uncached starting address of a chunk of uncached memory
+ * @uc_end: uncached ending address of a chunk of uncached memory
+ * @arg: ignored, (NULL argument passed in on call to efi_memmap_walk_uc())
+ *
* Called at boot time to build a map of pages that can be used for
* memory special operations.
*/
-static int __init
-uncached_build_memmap(unsigned long start, unsigned long end, void *arg)
+static int __init uncached_build_memmap(unsigned long uc_start,
+ unsigned long uc_end, void *arg)
{
- long length = end - start;
- int node;
-
- dprintk(KERN_ERR "uncached_build_memmap(%lx %lx)\n", start, end);
+ int nid = paddr_to_nid(uc_start - __IA64_UNCACHED_OFFSET);
+ struct gen_pool *pool = uncached_pool[nid];
+ size_t size = uc_end - uc_start;
touch_softlockup_watchdog();
- memset((char *)start, 0, length);
- node = paddr_to_nid(start - __IA64_UNCACHED_OFFSET);
-
- for (; start < end ; start += PAGE_SIZE) {
- dprintk(KERN_INFO "sticking %lx into the pool!\n", start);
- gen_pool_free(uncached_pool[node], start, PAGE_SIZE);
+ if (pool != NULL) {
+ memset((char *)uc_start, 0, size);
+ (void) gen_pool_add(pool, uc_start, size, nid);
}
-
return 0;
}
-static int __init uncached_init(void) {
- int i;
+static int __init uncached_init(void)
+{
+ int nid;
- for (i = 0; i < MAX_NUMNODES; i++) {
- if (!node_online(i))
- continue;
- uncached_pool[i] = gen_pool_create(0, IA64_GRANULE_SHIFT,
- &uncached_get_new_chunk, i);
+ for_each_online_node(nid) {
+ uncached_pool[nid] = gen_pool_create(PAGE_SHIFT, nid);
}
- efi_memmap_walk_uc(uncached_build_memmap);
-
+ efi_memmap_walk_uc(uncached_build_memmap, NULL);
return 0;
}
generated by cgit v0.10.2 at 2024-07-15 13:46:09 (GMT)