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Commit 6150c325 authored by Linus Torvalds's avatar Linus Torvalds
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge

parents 44637a12 be42d5fa
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Showing with 4121 additions and 369 deletions
Documentation/filesystems/spufs.txt 0 → 100644
View file @ 6150c325
This diff is collapsed.
Documentation/powerpc/00-INDEX
View file @ 6150c325
......@@ -8,12 +8,18 @@ please mail me.
cpu_features.txt
- info on how we support a variety of CPUs with minimal compile-time
options.
eeh-pci-error-recovery.txt
- info on PCI Bus EEH Error Recovery
hvcs.txt
- IBM "Hypervisor Virtual Console Server" Installation Guide
mpc52xx.txt
- Linux 2.6.x on MPC52xx family
ppc_htab.txt
- info about the Linux/PPC /proc/ppc_htab entry
smp.txt
- use and state info about Linux/PPC on MP machines
SBC8260_memory_mapping.txt
- EST SBC8260 board info
smp.txt
- use and state info about Linux/PPC on MP machines
sound.txt
- info on sound support under Linux/PPC
zImage_layout.txt
......
arch/powerpc/Kconfig
View file @ 6150c325
......@@ -47,7 +47,7 @@ config PPC
config EARLY_PRINTK
bool
default y if PPC64
default y
config COMPAT
bool
......@@ -297,6 +297,7 @@ config PPC_PMAC64
bool
depends on PPC_PMAC && POWER4
select U3_DART
select MPIC_BROKEN_U3
select GENERIC_TBSYNC
default y
......@@ -325,9 +326,7 @@ config PPC_CELL
select MMIO_NVRAM
config PPC_OF
bool
depends on PPC_MULTIPLATFORM # for now
default y
def_bool y
config XICS
depends on PPC_PSERIES
......@@ -376,11 +375,28 @@ config CELL_IIC
bool
default y
config CRASH_DUMP
bool "kernel crash dumps (EXPERIMENTAL)"
depends on PPC_MULTIPLATFORM
depends on EXPERIMENTAL
help
Build a kernel suitable for use as a kdump capture kernel.
The kernel will be linked at a different address than normal, and
so can only be used for Kdump.
Don't change this unless you know what you are doing.
config IBMVIO
depends on PPC_PSERIES || PPC_ISERIES
bool
default y
config IBMEBUS
depends on PPC_PSERIES
bool "Support for GX bus based adapters"
help
Bus device driver for GX bus based adapters.
config PPC_MPC106
bool
default n
......@@ -472,6 +488,7 @@ source arch/powerpc/platforms/embedded6xx/Kconfig
source arch/powerpc/platforms/4xx/Kconfig
source arch/powerpc/platforms/85xx/Kconfig
source arch/powerpc/platforms/8xx/Kconfig
source arch/powerpc/platforms/cell/Kconfig
menu "Kernel options"
......@@ -575,11 +592,12 @@ config ARCH_SELECT_MEMORY_MODEL
depends on PPC64
config ARCH_FLATMEM_ENABLE
def_bool y
depends on PPC64 && !NUMA
def_bool y
depends on (PPC64 && !NUMA) || PPC32
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on PPC64
config ARCH_SPARSEMEM_DEFAULT
def_bool y
......
arch/powerpc/Makefile
View file @ 6150c325
......@@ -151,7 +151,7 @@ CPPFLAGS_vmlinux.lds := -Upowerpc
# All the instructions talk about "make bzImage".
bzImage: zImage
BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm uImage
.PHONY: $(BOOT_TARGETS)
......
arch/powerpc/boot/Makefile
View file @ 6150c325
......@@ -143,6 +143,36 @@ $(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote
@cp -f $< $@
$(call if_changed,addnote)
#-----------------------------------------------------------
# build u-boot images
#-----------------------------------------------------------
quiet_cmd_mygzip = GZIP $@
cmd_mygzip = gzip -f -9 < $< > $@.$$$$ && mv $@.$$$$ $@
quiet_cmd_objbin = OBJCOPY $@
cmd_objbin = $(OBJCOPY) -O binary $< $@
quiet_cmd_uimage = UIMAGE $@
cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A ppc -O linux -T kernel \
-C gzip -a 00000000 -e 00000000 -n 'Linux-$(KERNELRELEASE)' \
-d $< $@
MKIMAGE := $(srctree)/scripts/mkuboot.sh
targets += uImage
extra-y += vmlinux.bin vmlinux.gz
$(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objbin)
$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,mygzip)
$(obj)/uImage: $(obj)/vmlinux.gz
$(Q)rm -f $@
$(call cmd,uimage)
@echo -n ' Image: $@ '
@if [ -f $@ ]; then echo 'is ready' ; else echo 'not made'; fi
install: $(CONFIGURE) $(BOOTIMAGE)
sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"
......
arch/powerpc/configs/pmac32_defconfig 0 → 100644
View file @ 6150c325
This diff is collapsed.
arch/powerpc/kernel/Makefile
View file @ 6150c325
......@@ -17,11 +17,11 @@ obj-y += vdso32/
obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \
signal_64.o ptrace32.o systbl.o \
paca.o ioctl32.o cpu_setup_power4.o \
firmware.o sysfs.o udbg.o idle_64.o
firmware.o sysfs.o idle_64.o
obj-$(CONFIG_PPC64) += vdso64/
obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o
obj-$(CONFIG_POWER4) += idle_power4.o
obj-$(CONFIG_PPC_OF) += of_device.o
obj-$(CONFIG_PPC_OF) += of_device.o prom_parse.o
procfs-$(CONFIG_PPC64) := proc_ppc64.o
obj-$(CONFIG_PROC_FS) += $(procfs-y)
rtaspci-$(CONFIG_PPC64) := rtas_pci.o
......@@ -30,12 +30,10 @@ obj-$(CONFIG_RTAS_FLASH) += rtas_flash.o
obj-$(CONFIG_RTAS_PROC) += rtas-proc.o
obj-$(CONFIG_LPARCFG) += lparcfg.o
obj-$(CONFIG_IBMVIO) += vio.o
obj-$(CONFIG_IBMEBUS) += ibmebus.o
obj-$(CONFIG_GENERIC_TBSYNC) += smp-tbsync.o
obj-$(CONFIG_PPC_PSERIES) += udbg_16550.o
obj-$(CONFIG_PPC_MAPLE) += udbg_16550.o
udbgscc-$(CONFIG_PPC64) := udbg_scc.o
obj-$(CONFIG_PPC_PMAC) += $(udbgscc-y)
obj64-$(CONFIG_PPC_MULTIPLATFORM) += nvram_64.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
ifeq ($(CONFIG_PPC_MERGE),y)
......@@ -48,25 +46,25 @@ extra-$(CONFIG_8xx) := head_8xx.o
extra-y += vmlinux.lds
obj-y += process.o init_task.o time.o \
prom.o traps.o setup-common.o
prom.o traps.o setup-common.o udbg.o
obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o systbl.o
obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o
obj-$(CONFIG_PPC_OF) += prom_init.o
obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
obj-$(CONFIG_MODULES) += ppc_ksyms.o
obj-$(CONFIG_BOOTX_TEXT) += btext.o
obj-$(CONFIG_6xx) += idle_6xx.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_SERIAL_8250) += legacy_serial.o udbg_16550.o
module-$(CONFIG_PPC64) += module_64.o
obj-$(CONFIG_MODULES) += $(module-y)
pci64-$(CONFIG_PPC64) += pci_64.o pci_dn.o pci_iommu.o \
pci_direct_iommu.o iomap.o
obj-$(CONFIG_PCI) += $(pci64-y)
kexec64-$(CONFIG_PPC64) += machine_kexec_64.o
obj-$(CONFIG_KEXEC) += $(kexec64-y)
kexec-$(CONFIG_PPC64) := machine_kexec_64.o
kexec-$(CONFIG_PPC32) := machine_kexec_32.o
obj-$(CONFIG_KEXEC) += machine_kexec.o crash.o $(kexec-y)
ifeq ($(CONFIG_PPC_ISERIES),y)
$(obj)/head_64.o: $(obj)/lparmap.s
......
arch/powerpc/kernel/asm-offsets.c
View file @ 6150c325
......@@ -92,9 +92,9 @@ int main(void)
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
DEFINE(TI_SC_NOERR, offsetof(struct thread_info, syscall_noerror));
#ifdef CONFIG_PPC32
DEFINE(TI_SIGFRAME, offsetof(struct thread_info, nvgprs_frame));
DEFINE(TI_TASK, offsetof(struct thread_info, task));
#ifdef CONFIG_PPC32
DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
#endif /* CONFIG_PPC32 */
......@@ -131,11 +131,9 @@ int main(void)
DEFINE(PACALOWHTLBAREAS, offsetof(struct paca_struct, context.low_htlb_areas));
DEFINE(PACAHIGHHTLBAREAS, offsetof(struct paca_struct, context.high_htlb_areas));
#endif /* CONFIG_HUGETLB_PAGE */
DEFINE(PACADEFAULTDECR, offsetof(struct paca_struct, default_decr));
DEFINE(PACA_EXGEN, offsetof(struct paca_struct, exgen));
DEFINE(PACA_EXMC, offsetof(struct paca_struct, exmc));
DEFINE(PACA_EXSLB, offsetof(struct paca_struct, exslb));
DEFINE(PACA_EXDSI, offsetof(struct paca_struct, exdsi));
DEFINE(PACAEMERGSP, offsetof(struct paca_struct, emergency_sp));
DEFINE(PACALPPACA, offsetof(struct paca_struct, lppaca));
DEFINE(PACAHWCPUID, offsetof(struct paca_struct, hw_cpu_id));
......
arch/powerpc/kernel/btext.c
View file @ 6150c325
......@@ -31,15 +31,18 @@ static void draw_byte_32(unsigned char *bits, unsigned int *base, int rb);
static void draw_byte_16(unsigned char *bits, unsigned int *base, int rb);
static void draw_byte_8(unsigned char *bits, unsigned int *base, int rb);
static int g_loc_X;
static int g_loc_Y;
static int g_max_loc_X;
static int g_max_loc_Y;
#define __force_data __attribute__((__section__(".data")))
static int dispDeviceRowBytes;
static int dispDeviceDepth;
static int dispDeviceRect[4];
static unsigned char *dispDeviceBase, *logicalDisplayBase;
static int g_loc_X __force_data;
static int g_loc_Y __force_data;
static int g_max_loc_X __force_data;
static int g_max_loc_Y __force_data;
static int dispDeviceRowBytes __force_data;
static int dispDeviceDepth __force_data;
static int dispDeviceRect[4] __force_data;
static unsigned char *dispDeviceBase __force_data;
static unsigned char *logicalDisplayBase __force_data;
unsigned long disp_BAT[2] __initdata = {0, 0};
......@@ -47,7 +50,7 @@ unsigned long disp_BAT[2] __initdata = {0, 0};
static unsigned char vga_font[cmapsz];
int boot_text_mapped;
int boot_text_mapped __force_data = 0;
int force_printk_to_btext = 0;
#ifdef CONFIG_PPC32
......@@ -57,7 +60,7 @@ int force_printk_to_btext = 0;
*
* The display is mapped to virtual address 0xD0000000, rather
* than 1:1, because some some CHRP machines put the frame buffer
* in the region starting at 0xC0000000 (KERNELBASE).
* in the region starting at 0xC0000000 (PAGE_OFFSET).
* This mapping is temporary and will disappear as soon as the
* setup done by MMU_Init() is applied.
*
......@@ -66,10 +69,9 @@ int force_printk_to_btext = 0;
* is really badly aligned, but I didn't encounter this case
* yet.
*/
void __init
btext_prepare_BAT(void)
void __init btext_prepare_BAT(void)
{
unsigned long vaddr = KERNELBASE + 0x10000000;
unsigned long vaddr = PAGE_OFFSET + 0x10000000;
unsigned long addr;
unsigned long lowbits;
......@@ -95,12 +97,13 @@ btext_prepare_BAT(void)
}
#endif
/* This function will enable the early boot text when doing OF booting. This
* way, xmon output should work too
/* This function can be used to enable the early boot text when doing
* OF booting or within bootx init. It must be followed by a btext_unmap()
* call before the logical address becomes unuseable
*/
void __init
btext_setup_display(int width, int height, int depth, int pitch,
unsigned long address)
void __init btext_setup_display(int width, int height, int depth, int pitch,
unsigned long address)
{
g_loc_X = 0;
g_loc_Y = 0;
......@@ -116,6 +119,11 @@ btext_setup_display(int width, int height, int depth, int pitch,
boot_text_mapped = 1;
}
void __init btext_unmap(void)
{
boot_text_mapped = 0;
}
/* Here's a small text engine to use during early boot
* or for debugging purposes
*
......@@ -127,7 +135,7 @@ btext_setup_display(int width, int height, int depth, int pitch,
* changes.
*/
void map_boot_text(void)
static void map_boot_text(void)
{
unsigned long base, offset, size;
unsigned char *vbase;
......@@ -175,8 +183,9 @@ int btext_initialize(struct device_node *np)
if (prop)
address = *prop;
/* FIXME: Add support for PCI reg properties */
/* FIXME: Add support for PCI reg properties. Right now, only
* reliable on macs
*/
if (address == 0)
return -EINVAL;
......@@ -184,7 +193,6 @@ int btext_initialize(struct device_node *np)
g_loc_Y = 0;
g_max_loc_X = width / 8;
g_max_loc_Y = height / 16;
logicalDisplayBase = (unsigned char *)address;
dispDeviceBase = (unsigned char *)address;
dispDeviceRowBytes = pitch;
dispDeviceDepth = depth;
......@@ -197,14 +205,12 @@ int btext_initialize(struct device_node *np)
return 0;
}
void __init init_boot_display(void)
int __init btext_find_display(int allow_nonstdout)
{
char *name;
struct device_node *np = NULL;
int rc = -ENODEV;
printk("trying to initialize btext ...\n");
name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
if (name != NULL) {
np = of_find_node_by_path(name);
......@@ -218,8 +224,8 @@ void __init init_boot_display(void)
}
if (np)
rc = btext_initialize(np);
if (rc == 0)
return;
if (rc == 0 || !allow_nonstdout)
return rc;
for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
if (get_property(np, "linux,opened", NULL)) {
......@@ -228,8 +234,9 @@ void __init init_boot_display(void)
printk("result: %d\n", rc);
}
if (rc == 0)
return;
break;
}
return rc;
}
/* Calc the base address of a given point (x,y) */
......@@ -277,44 +284,83 @@ EXPORT_SYMBOL(btext_update_display);
void btext_clearscreen(void)
{
unsigned long *base = (unsigned long *)calc_base(0, 0);
unsigned int *base = (unsigned int *)calc_base(0, 0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 3;
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)
{
unsigned long *ptr = base;
unsigned int *ptr = base;
for(j=width; j; --j)
*(ptr++) = 0;
base += (dispDeviceRowBytes >> 3);
base += (dispDeviceRowBytes >> 2);
}
}
void btext_flushscreen(void)
{
unsigned int *base = (unsigned int *)calc_base(0, 0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i < (dispDeviceRect[3] - dispDeviceRect[1]); i++)
{
unsigned int *ptr = base;
for(j = width; j > 0; j -= 8) {
__asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
ptr += 8;
}
base += (dispDeviceRowBytes >> 2);
}
__asm__ __volatile__ ("sync" ::: "memory");
}
void btext_flushline(void)
{
unsigned int *base = (unsigned int *)calc_base(0, g_loc_Y << 4);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i < 16; i++)
{
unsigned int *ptr = base;
for(j = width; j > 0; j -= 8) {
__asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
ptr += 8;
}
base += (dispDeviceRowBytes >> 2);
}
__asm__ __volatile__ ("sync" ::: "memory");
}
#ifndef NO_SCROLL
static void scrollscreen(void)
{
unsigned long *src = (unsigned long *)calc_base(0,16);
unsigned long *dst = (unsigned long *)calc_base(0,0);
unsigned int *src = (unsigned int *)calc_base(0,16);
unsigned int *dst = (unsigned int *)calc_base(0,0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 3;
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)
{
unsigned long *src_ptr = src;
unsigned long *dst_ptr = dst;
unsigned int *src_ptr = src;
unsigned int *dst_ptr = dst;
for(j=width; j; --j)
*(dst_ptr++) = *(src_ptr++);
src += (dispDeviceRowBytes >> 3);
dst += (dispDeviceRowBytes >> 3);
src += (dispDeviceRowBytes >> 2);
dst += (dispDeviceRowBytes >> 2);
}
for (i=0; i<16; i++)
{
unsigned long *dst_ptr = dst;
unsigned int *dst_ptr = dst;
for(j=width; j; --j)
*(dst_ptr++) = 0;
dst += (dispDeviceRowBytes >> 3);
dst += (dispDeviceRowBytes >> 2);
}
}
#endif /* ndef NO_SCROLL */
......@@ -377,6 +423,14 @@ void btext_drawstring(const char *c)
btext_drawchar(*c++);
}
void btext_drawtext(const char *c, unsigned int len)
{
if (!boot_text_mapped)
return;
while (len--)
btext_drawchar(*c++);
}
void btext_drawhex(unsigned long v)
{
char *hex_table = "0123456789abcdef";
......
arch/powerpc/kernel/cputable.c
View file @ 6150c325
......@@ -78,10 +78,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_power3,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/power3",
.oprofile_model = &op_model_rs64,
#endif
.oprofile_type = RS64,
},
{ /* Power3+ */
.pvr_mask = 0xffff0000,
......@@ -93,10 +91,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_power3,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/power3",
.oprofile_model = &op_model_rs64,
#endif
.oprofile_type = RS64,
},
{ /* Northstar */
.pvr_mask = 0xffff0000,
......@@ -108,10 +104,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_power3,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/rs64",
.oprofile_model = &op_model_rs64,
#endif
.oprofile_type = RS64,
},
{ /* Pulsar */
.pvr_mask = 0xffff0000,
......@@ -123,10 +117,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_power3,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/rs64",
.oprofile_model = &op_model_rs64,
#endif
.oprofile_type = RS64,
},
{ /* I-star */
.pvr_mask = 0xffff0000,
......@@ -138,10 +130,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_power3,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/rs64",
.oprofile_model = &op_model_rs64,
#endif
.oprofile_type = RS64,
},
{ /* S-star */
.pvr_mask = 0xffff0000,
......@@ -153,10 +143,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_power3,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/rs64",
.oprofile_model = &op_model_rs64,
#endif
.oprofile_type = RS64,
},
{ /* Power4 */
.pvr_mask = 0xffff0000,
......@@ -168,10 +156,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_power4,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/power4",
.oprofile_model = &op_model_rs64,
#endif
.oprofile_type = POWER4,
},
{ /* Power4+ */
.pvr_mask = 0xffff0000,
......@@ -183,10 +169,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_power4,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/power4",
.oprofile_model = &op_model_power4,
#endif
.oprofile_type = POWER4,
},
{ /* PPC970 */
.pvr_mask = 0xffff0000,
......@@ -199,10 +183,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_ppc970,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/970",
.oprofile_model = &op_model_power4,
#endif
.oprofile_type = POWER4,
},
#endif /* CONFIG_PPC64 */
#if defined(CONFIG_PPC64) || defined(CONFIG_POWER4)
......@@ -221,10 +203,8 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 8,
.cpu_setup = __setup_cpu_ppc970,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/970",
.oprofile_model = &op_model_power4,
#endif
.oprofile_type = POWER4,
},
#endif /* defined(CONFIG_PPC64) || defined(CONFIG_POWER4) */
#ifdef CONFIG_PPC64
......@@ -238,10 +218,8 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 128,
.dcache_bsize = 128,
.cpu_setup = __setup_cpu_ppc970,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/970",
.oprofile_model = &op_model_power4,
#endif
.oprofile_type = POWER4,
},
{ /* Power5 GR */
.pvr_mask = 0xffff0000,
......@@ -253,27 +231,23 @@ struct cpu_spec cpu_specs[] = {
.dcache_bsize = 128,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_power4,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/power5",
.oprofile_model = &op_model_power4,
#endif
.oprofile_type = POWER4,
},
{ /* Power5 GS */
.pvr_mask = 0xffff0000,
.pvr_value = 0x003b0000,
.cpu_name = "POWER5 (gs)",
.cpu_name = "POWER5+ (gs)",
.cpu_features = CPU_FTRS_POWER5,
.cpu_user_features = COMMON_USER_POWER5_PLUS,
.icache_bsize = 128,
.dcache_bsize = 128,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_power4,
#ifdef CONFIG_OPROFILE
.oprofile_cpu_type = "ppc64/power5",
.oprofile_model = &op_model_power4,
#endif
.oprofile_cpu_type = "ppc64/power5+",
.oprofile_type = POWER4,
},
{ /* BE DD1.x */
{ /* Cell Broadband Engine */
.pvr_mask = 0xffff0000,
.pvr_value = 0x00700000,
.cpu_name = "Cell Broadband Engine",
......@@ -545,7 +519,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7450 2.1 */
.pvr_mask = 0xffffffff,
......@@ -556,7 +532,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7450 2.3 and newer */
.pvr_mask = 0xffff0000,
......@@ -567,7 +545,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7455 rev 1.x */
.pvr_mask = 0xffffff00,
......@@ -578,7 +558,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7455 rev 2.0 */
.pvr_mask = 0xffffffff,
......@@ -589,7 +571,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7455 others */
.pvr_mask = 0xffff0000,
......@@ -600,7 +584,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7447/7457 Rev 1.0 */
.pvr_mask = 0xffffffff,
......@@ -611,7 +597,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7447/7457 Rev 1.1 */
.pvr_mask = 0xffffffff,
......@@ -622,7 +610,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7447/7457 Rev 1.2 and later */
.pvr_mask = 0xffff0000,
......@@ -633,7 +623,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7447A */
.pvr_mask = 0xffff0000,
......@@ -644,7 +636,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 7448 */
.pvr_mask = 0xffff0000,
......@@ -655,7 +649,9 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 6,
.cpu_setup = __setup_cpu_745x
.cpu_setup = __setup_cpu_745x,
.oprofile_cpu_type = "ppc/7450",
.oprofile_type = G4,
},
{ /* 82xx (8240, 8245, 8260 are all 603e cores) */
.pvr_mask = 0x7fff0000,
......@@ -979,6 +975,8 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 4,
.oprofile_cpu_type = "ppc/e500",
.oprofile_type = BOOKE,
},
{ /* e500v2 */
.pvr_mask = 0xffff0000,
......@@ -992,6 +990,8 @@ struct cpu_spec cpu_specs[] = {
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 4,
.oprofile_cpu_type = "ppc/e500",
.oprofile_type = BOOKE,
},
#endif
#if !CLASSIC_PPC
......
arch/powerpc/kernel/crash.c 0 → 100644
View file @ 6150c325
/*
* Architecture specific (PPC64) functions for kexec based crash dumps.
*
* Copyright (C) 2005, IBM Corp.
*
* Created by: Haren Myneni
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*
*/
#undef DEBUG
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/reboot.h>
#include <linux/kexec.h>
#include <linux/bootmem.h>
#include <linux/crash_dump.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/elf.h>
#include <linux/elfcore.h>
#include <linux/init.h>
#include <linux/types.h>
#include <asm/processor.h>
#include <asm/machdep.h>
#include <asm/kdump.h>
#include <asm/lmb.h>
#include <asm/firmware.h>
#ifdef DEBUG
#include <asm/udbg.h>
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif
/* This keeps a track of which one is crashing cpu. */
int crashing_cpu = -1;
static u32 *append_elf_note(u32 *buf, char *name, unsigned type, void *data,
size_t data_len)
{
struct elf_note note;
note.n_namesz = strlen(name) + 1;
note.n_descsz = data_len;
note.n_type = type;
memcpy(buf, &note, sizeof(note));
buf += (sizeof(note) +3)/4;
memcpy(buf, name, note.n_namesz);
buf += (note.n_namesz + 3)/4;
memcpy(buf, data, note.n_descsz);
buf += (note.n_descsz + 3)/4;
return buf;
}
static void final_note(u32 *buf)
{
struct elf_note note;
note.n_namesz = 0;
note.n_descsz = 0;
note.n_type = 0;
memcpy(buf, &note, sizeof(note));
}
static void crash_save_this_cpu(struct pt_regs *regs, int cpu)
{
struct elf_prstatus prstatus;
u32 *buf;
if ((cpu < 0) || (cpu >= NR_CPUS))
return;
/* Using ELF notes here is opportunistic.
* I need a well defined structure format
* for the data I pass, and I need tags
* on the data to indicate what information I have
* squirrelled away. ELF notes happen to provide
* all of that that no need to invent something new.
*/
buf = &crash_notes[cpu][0];
memset(&prstatus, 0, sizeof(prstatus));
prstatus.pr_pid = current->pid;
elf_core_copy_regs(&prstatus.pr_reg, regs);
buf = append_elf_note(buf, "CORE", NT_PRSTATUS, &prstatus,
sizeof(prstatus));
final_note(buf);
}
/* FIXME Merge this with xmon_save_regs ?? */
static inline void crash_get_current_regs(struct pt_regs *regs)
{
unsigned long tmp1, tmp2;
__asm__ __volatile__ (
"std 0,0(%2)\n"
"std 1,8(%2)\n"
"std 2,16(%2)\n"
"std 3,24(%2)\n"
"std 4,32(%2)\n"
"std 5,40(%2)\n"
"std 6,48(%2)\n"
"std 7,56(%2)\n"
"std 8,64(%2)\n"
"std 9,72(%2)\n"
"std 10,80(%2)\n"
"std 11,88(%2)\n"
"std 12,96(%2)\n"
"std 13,104(%2)\n"
"std 14,112(%2)\n"
"std 15,120(%2)\n"
"std 16,128(%2)\n"
"std 17,136(%2)\n"
"std 18,144(%2)\n"
"std 19,152(%2)\n"
"std 20,160(%2)\n"
"std 21,168(%2)\n"
"std 22,176(%2)\n"
"std 23,184(%2)\n"
"std 24,192(%2)\n"
"std 25,200(%2)\n"
"std 26,208(%2)\n"
"std 27,216(%2)\n"
"std 28,224(%2)\n"
"std 29,232(%2)\n"
"std 30,240(%2)\n"
"std 31,248(%2)\n"
"mfmsr %0\n"
"std %0, 264(%2)\n"
"mfctr %0\n"
"std %0, 280(%2)\n"
"mflr %0\n"
"std %0, 288(%2)\n"
"bl 1f\n"
"1: mflr %1\n"
"std %1, 256(%2)\n"
"mtlr %0\n"
"mfxer %0\n"
"std %0, 296(%2)\n"
: "=&r" (tmp1), "=&r" (tmp2)
: "b" (regs));
}
/* We may have saved_regs from where the error came from
* or it is NULL if via a direct panic().
*/
static void crash_save_self(struct pt_regs *saved_regs)
{
struct pt_regs regs;
int cpu;
cpu = smp_processor_id();
if (saved_regs)
memcpy(&regs, saved_regs, sizeof(regs));
else
crash_get_current_regs(&regs);
crash_save_this_cpu(&regs, cpu);
}
#ifdef CONFIG_SMP
static atomic_t waiting_for_crash_ipi;
void crash_ipi_callback(struct pt_regs *regs)
{
int cpu = smp_processor_id();
if (cpu == crashing_cpu)
return;
if (!cpu_online(cpu))
return;
if (ppc_md.kexec_cpu_down)
ppc_md.kexec_cpu_down(1, 1);
local_irq_disable();
crash_save_this_cpu(regs, cpu);
atomic_dec(&waiting_for_crash_ipi);
kexec_smp_wait();
/* NOTREACHED */
}
static void crash_kexec_prepare_cpus(void)
{
unsigned int msecs;
atomic_set(&waiting_for_crash_ipi, num_online_cpus() - 1);
crash_send_ipi(crash_ipi_callback);
smp_wmb();
/*
* FIXME: Until we will have the way to stop other CPUSs reliabally,
* the crash CPU will send an IPI and wait for other CPUs to
* respond. If not, proceed the kexec boot even though we failed to
* capture other CPU states.
*/
msecs = 1000000;
while ((atomic_read(&waiting_for_crash_ipi) > 0) && (--msecs > 0)) {
barrier();
mdelay(1);
}
/* Would it be better to replace the trap vector here? */
/*
* FIXME: In case if we do not get all CPUs, one possibility: ask the
* user to do soft reset such that we get all.
* IPI handler is already set by the panic cpu initially. Therefore,
* all cpus could invoke this handler from die() and the panic CPU
* will call machine_kexec() directly from this handler to do
* kexec boot.
*/
if (atomic_read(&waiting_for_crash_ipi))
printk(KERN_ALERT "done waiting: %d cpus not responding\n",
atomic_read(&waiting_for_crash_ipi));
/* Leave the IPI callback set */
}
#else
static void crash_kexec_prepare_cpus(void)
{
/*
* move the secondarys to us so that we can copy
* the new kernel 0-0x100 safely
*
* do this if kexec in setup.c ?
*/
smp_release_cpus();
}
#endif
void default_machine_crash_shutdown(struct pt_regs *regs)
{
/*
* This function is only called after the system
* has paniced or is otherwise in a critical state.
* The minimum amount of code to allow a kexec'd kernel
* to run successfully needs to happen here.
*
* In practice this means stopping other cpus in
* an SMP system.
* The kernel is broken so disable interrupts.
*/
local_irq_disable();
if (ppc_md.kexec_cpu_down)
ppc_md.kexec_cpu_down(1, 0);
/*
* Make a note of crashing cpu. Will be used in machine_kexec
* such that another IPI will not be sent.
*/
crashing_cpu = smp_processor_id();
crash_kexec_prepare_cpus();
crash_save_self(regs);
}
arch/powerpc/kernel/crash_dump.c 0 → 100644
View file @ 6150c325
/*
* Routines for doing kexec-based kdump.
*
* Copyright (C) 2005, IBM Corp.
*
* Created by: Michael Ellerman
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
#undef DEBUG
#include <linux/crash_dump.h>
#include <linux/bootmem.h>
#include <asm/kdump.h>
#include <asm/lmb.h>
#include <asm/firmware.h>
#include <asm/uaccess.h>
#ifdef DEBUG
#include <asm/udbg.h>
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif
static void __init create_trampoline(unsigned long addr)
{
/* The maximum range of a single instruction branch, is the current
* instruction's address + (32 MB - 4) bytes. For the trampoline we
* need to branch to current address + 32 MB. So we insert a nop at
* the trampoline address, then the next instruction (+ 4 bytes)
* does a branch to (32 MB - 4). The net effect is that when we
* branch to "addr" we jump to ("addr" + 32 MB). Although it requires
* two instructions it doesn't require any registers.
*/
create_instruction(addr, 0x60000000); /* nop */
create_branch(addr + 4, addr + PHYSICAL_START, 0);
}
void __init kdump_setup(void)
{
unsigned long i;
DBG(" -> kdump_setup()\n");
for (i = KDUMP_TRAMPOLINE_START; i < KDUMP_TRAMPOLINE_END; i += 8) {
create_trampoline(i);
}
create_trampoline(__pa(system_reset_fwnmi) - PHYSICAL_START);
create_trampoline(__pa(machine_check_fwnmi) - PHYSICAL_START);
DBG(" <- kdump_setup()\n");
}
static int __init parse_elfcorehdr(char *p)
{
if (p)
elfcorehdr_addr = memparse(p, &p);
return 0;
}
__setup("elfcorehdr=", parse_elfcorehdr);
static int __init parse_savemaxmem(char *p)
{
if (p)
saved_max_pfn = (memparse(p, &p) >> PAGE_SHIFT) - 1;
return 0;
}
__setup("savemaxmem=", parse_savemaxmem);
/*
* copy_oldmem_page - copy one page from "oldmem"
* @pfn: page frame number to be copied
* @buf: target memory address for the copy; this can be in kernel address
* space or user address space (see @userbuf)
* @csize: number of bytes to copy
* @offset: offset in bytes into the page (based on pfn) to begin the copy
* @userbuf: if set, @buf is in user address space, use copy_to_user(),
* otherwise @buf is in kernel address space, use memcpy().
*
* Copy a page from "oldmem". For this page, there is no pte mapped
* in the current kernel. We stitch up a pte, similar to kmap_atomic.
*/
ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
size_t csize, unsigned long offset, int userbuf)
{
void *vaddr;
if (!csize)
return 0;
vaddr = __ioremap(pfn << PAGE_SHIFT, PAGE_SIZE, 0);
if (userbuf) {
if (copy_to_user((char __user *)buf, (vaddr + offset), csize)) {
iounmap(vaddr);
return -EFAULT;
}
} else
memcpy(buf, (vaddr + offset), csize);
iounmap(vaddr);
return csize;
}
arch/powerpc/kernel/dma_64.c
View file @ 6150c325
......@@ -10,6 +10,7 @@
/* Include the busses we support */
#include <linux/pci.h>
#include <asm/vio.h>
#include <asm/ibmebus.h>
#include <asm/scatterlist.h>
#include <asm/bug.h>
......@@ -22,6 +23,10 @@ static struct dma_mapping_ops *get_dma_ops(struct device *dev)
#ifdef CONFIG_IBMVIO
if (dev->bus == &vio_bus_type)
return &vio_dma_ops;
#endif
#ifdef CONFIG_IBMEBUS
if (dev->bus == &ibmebus_bus_type)
return &ibmebus_dma_ops;
#endif
return NULL;
}
......@@ -47,6 +52,10 @@ int dma_set_mask(struct device *dev, u64 dma_mask)
if (dev->bus == &vio_bus_type)
return -EIO;
#endif /* CONFIG_IBMVIO */
#ifdef CONFIG_IBMEBUS
if (dev->bus == &ibmebus_bus_type)
return -EIO;
#endif
BUG();
return 0;
}
......
arch/powerpc/kernel/entry_32.S
View file @ 6150c325
......@@ -200,8 +200,6 @@ _GLOBAL(DoSyscall)
bl do_show_syscall
#endif /* SHOW_SYSCALLS */
rlwinm r10,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
li r11,0
stb r11,TI_SC_NOERR(r10)
lwz r11,TI_FLAGS(r10)
andi. r11,r11,_TIF_SYSCALL_T_OR_A
bne- syscall_dotrace
......@@ -222,25 +220,21 @@ ret_from_syscall:
bl do_show_syscall_exit
#endif
mr r6,r3
li r11,-_LAST_ERRNO
cmplw 0,r3,r11
rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
blt+ 30f
lbz r11,TI_SC_NOERR(r12)
cmpwi r11,0
bne 30f
neg r3,r3
lwz r10,_CCR(r1) /* Set SO bit in CR */
oris r10,r10,0x1000
stw r10,_CCR(r1)
/* disable interrupts so current_thread_info()->flags can't change */
30: LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
SYNC
MTMSRD(r10)
lwz r9,TI_FLAGS(r12)
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SIGPENDING|_TIF_NEED_RESCHED)
li r8,-_LAST_ERRNO
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_RESTOREALL)
bne- syscall_exit_work
cmplw 0,r3,r8
blt+ syscall_exit_cont
lwz r11,_CCR(r1) /* Load CR */
neg r3,r3
oris r11,r11,0x1000 /* Set SO bit in CR */
stw r11,_CCR(r1)
syscall_exit_cont:
#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
/* If the process has its own DBCR0 value, load it up. The single
......@@ -292,46 +286,113 @@ syscall_dotrace:
b syscall_dotrace_cont
syscall_exit_work:
stw r6,RESULT(r1) /* Save result */
andi. r0,r9,_TIF_RESTOREALL
bne- 2f
cmplw 0,r3,r8
blt+ 1f
andi. r0,r9,_TIF_NOERROR
bne- 1f
lwz r11,_CCR(r1) /* Load CR */
neg r3,r3
oris r11,r11,0x1000 /* Set SO bit in CR */
stw r11,_CCR(r1)
1: stw r6,RESULT(r1) /* Save result */
stw r3,GPR3(r1) /* Update return value */
andi. r0,r9,_TIF_SYSCALL_T_OR_A
beq 5f
ori r10,r10,MSR_EE
SYNC
MTMSRD(r10) /* re-enable interrupts */
2: andi. r0,r9,(_TIF_PERSYSCALL_MASK)
beq 4f
/* Clear per-syscall TIF flags if any are set, but _leave_
_TIF_SAVE_NVGPRS set in r9 since we haven't dealt with that
yet. */
li r11,_TIF_PERSYSCALL_MASK
addi r12,r12,TI_FLAGS
3: lwarx r8,0,r12
andc r8,r8,r11
#ifdef CONFIG_IBM405_ERR77
dcbt 0,r12
#endif
stwcx. r8,0,r12
bne- 3b
subi r12,r12,TI_FLAGS
4: /* Anything which requires enabling interrupts? */
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_SAVE_NVGPRS)
beq 7f
/* Save NVGPRS if they're not saved already */
lwz r4,_TRAP(r1)
andi. r4,r4,1
beq 4f
beq 5f
SAVE_NVGPRS(r1)
li r4,0xc00
stw r4,_TRAP(r1)
4:
/* Re-enable interrupts */
5: ori r10,r10,MSR_EE
SYNC
MTMSRD(r10)
andi. r0,r9,_TIF_SAVE_NVGPRS
bne save_user_nvgprs
save_user_nvgprs_cont:
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
beq 7f
addi r3,r1,STACK_FRAME_OVERHEAD
bl do_syscall_trace_leave
REST_NVGPRS(r1)
2:
lwz r3,GPR3(r1)
6: lwz r3,GPR3(r1)
LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
SYNC
MTMSRD(r10) /* disable interrupts again */
rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
lwz r9,TI_FLAGS(r12)
5:
7:
andi. r0,r9,_TIF_NEED_RESCHED
bne 1f
bne 8f
lwz r5,_MSR(r1)
andi. r5,r5,MSR_PR
beq syscall_exit_cont
beq ret_from_except
andi. r0,r9,_TIF_SIGPENDING
beq syscall_exit_cont
beq ret_from_except
b do_user_signal
1:
8:
ori r10,r10,MSR_EE
SYNC
MTMSRD(r10) /* re-enable interrupts */
bl schedule
b 2b
b 6b
save_user_nvgprs:
lwz r8,TI_SIGFRAME(r12)
.macro savewords start, end
1: stw \start,4*(\start)(r8)
.section __ex_table,"a"
.align 2
.long 1b,save_user_nvgprs_fault
.previous
.if \end - \start
savewords "(\start+1)",\end
.endif
.endm
savewords 14,31
b save_user_nvgprs_cont
save_user_nvgprs_fault:
li r3,11 /* SIGSEGV */
lwz r4,TI_TASK(r12)
bl force_sigsegv
rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
lwz r9,TI_FLAGS(r12)
b save_user_nvgprs_cont
#ifdef SHOW_SYSCALLS
do_show_syscall:
#ifdef SHOW_SYSCALLS_TASK
......@@ -401,28 +462,10 @@ show_syscalls_task:
#endif /* SHOW_SYSCALLS */
/*
* The sigsuspend and rt_sigsuspend system calls can call do_signal
* and thus put the process into the stopped state where we might
* want to examine its user state with ptrace. Therefore we need
* to save all the nonvolatile registers (r13 - r31) before calling
* the C code.
* The fork/clone functions need to copy the full register set into
* the child process. Therefore we need to save all the nonvolatile
* registers (r13 - r31) before calling the C code.
*/
.globl ppc_sigsuspend
ppc_sigsuspend:
SAVE_NVGPRS(r1)
lwz r0,_TRAP(r1)
rlwinm r0,r0,0,0,30 /* clear LSB to indicate full */
stw r0,_TRAP(r1) /* register set saved */
b sys_sigsuspend
.globl ppc_rt_sigsuspend
ppc_rt_sigsuspend:
SAVE_NVGPRS(r1)
lwz r0,_TRAP(r1)
rlwinm r0,r0,0,0,30
stw r0,_TRAP(r1)
b sys_rt_sigsuspend
.globl ppc_fork
ppc_fork:
SAVE_NVGPRS(r1)
......@@ -447,14 +490,6 @@ ppc_clone:
stw r0,_TRAP(r1) /* register set saved */
b sys_clone
.globl ppc_swapcontext
ppc_swapcontext:
SAVE_NVGPRS(r1)
lwz r0,_TRAP(r1)
rlwinm r0,r0,0,0,30 /* clear LSB to indicate full */
stw r0,_TRAP(r1) /* register set saved */
b sys_swapcontext
/*
* Top-level page fault handling.
* This is in assembler because if do_page_fault tells us that
......@@ -626,16 +661,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_601)
.long ret_from_except
#endif
.globl sigreturn_exit
sigreturn_exit:
subi r1,r3,STACK_FRAME_OVERHEAD
rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
lwz r9,TI_FLAGS(r12)
andi. r0,r9,_TIF_SYSCALL_T_OR_A
beq+ ret_from_except_full
bl do_syscall_trace_leave
/* fall through */
.globl ret_from_except_full
ret_from_except_full:
REST_NVGPRS(r1)
......@@ -658,7 +683,7 @@ user_exc_return: /* r10 contains MSR_KERNEL here */
/* Check current_thread_info()->flags */
rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
lwz r9,TI_FLAGS(r9)
andi. r0,r9,(_TIF_SIGPENDING|_TIF_NEED_RESCHED)
andi. r0,r9,(_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_RESTOREALL)
bne do_work
restore_user:
......
arch/powerpc/kernel/entry_64.S
View file @ 6150c325
......@@ -113,9 +113,7 @@ system_call_common:
addi r9,r1,STACK_FRAME_OVERHEAD
#endif
clrrdi r11,r1,THREAD_SHIFT
li r12,0
ld r10,TI_FLAGS(r11)
stb r12,TI_SC_NOERR(r11)
andi. r11,r10,_TIF_SYSCALL_T_OR_A
bne- syscall_dotrace
syscall_dotrace_cont:
......@@ -144,24 +142,12 @@ system_call: /* label this so stack traces look sane */
bctrl /* Call handler */
syscall_exit:
std r3,RESULT(r1)
#ifdef SHOW_SYSCALLS
std r3,GPR3(r1)
bl .do_show_syscall_exit
ld r3,GPR3(r1)
ld r3,RESULT(r1)
#endif
std r3,RESULT(r1)
ld r5,_CCR(r1)
li r10,-_LAST_ERRNO
cmpld r3,r10
clrrdi r12,r1,THREAD_SHIFT
bge- syscall_error
syscall_error_cont:
/* check for syscall tracing or audit */
ld r9,TI_FLAGS(r12)
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
bne- syscall_exit_trace
syscall_exit_trace_cont:
/* disable interrupts so current_thread_info()->flags can't change,
and so that we don't get interrupted after loading SRR0/1. */
......@@ -173,8 +159,13 @@ syscall_exit_trace_cont:
rotldi r10,r10,16
mtmsrd r10,1
ld r9,TI_FLAGS(r12)
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SIGPENDING|_TIF_NEED_RESCHED)
li r11,-_LAST_ERRNO
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_RESTOREALL|_TIF_SAVE_NVGPRS|_TIF_NOERROR)
bne- syscall_exit_work
cmpld r3,r11
ld r5,_CCR(r1)
bge- syscall_error
syscall_error_cont:
ld r7,_NIP(r1)
stdcx. r0,0,r1 /* to clear the reservation */
andi. r6,r8,MSR_PR
......@@ -193,21 +184,12 @@ syscall_exit_trace_cont:
rfid
b . /* prevent speculative execution */
syscall_enosys:
li r3,-ENOSYS
std r3,RESULT(r1)
clrrdi r12,r1,THREAD_SHIFT
ld r5,_CCR(r1)
syscall_error:
lbz r11,TI_SC_NOERR(r12)
cmpwi 0,r11,0
bne- syscall_error_cont
neg r3,r3
syscall_error:
oris r5,r5,0x1000 /* Set SO bit in CR */
neg r3,r3
std r5,_CCR(r1)
b syscall_error_cont
/* Traced system call support */
syscall_dotrace:
bl .save_nvgprs
......@@ -225,21 +207,69 @@ syscall_dotrace:
ld r10,TI_FLAGS(r10)
b syscall_dotrace_cont
syscall_exit_trace:
std r3,GPR3(r1)
bl .save_nvgprs
syscall_enosys:
li r3,-ENOSYS
b syscall_exit
syscall_exit_work:
/* If TIF_RESTOREALL is set, don't scribble on either r3 or ccr.
If TIF_NOERROR is set, just save r3 as it is. */
andi. r0,r9,_TIF_RESTOREALL
bne- 2f
cmpld r3,r11 /* r10 is -LAST_ERRNO */
blt+ 1f
andi. r0,r9,_TIF_NOERROR
bne- 1f
ld r5,_CCR(r1)
neg r3,r3
oris r5,r5,0x1000 /* Set SO bit in CR */
std r5,_CCR(r1)
1: std r3,GPR3(r1)
2: andi. r0,r9,(_TIF_PERSYSCALL_MASK)
beq 4f
/* Clear per-syscall TIF flags if any are set, but _leave_
_TIF_SAVE_NVGPRS set in r9 since we haven't dealt with that
yet. */
li r11,_TIF_PERSYSCALL_MASK
addi r12,r12,TI_FLAGS
3: ldarx r10,0,r12
andc r10,r10,r11
stdcx. r10,0,r12
bne- 3b
subi r12,r12,TI_FLAGS
4: bl .save_nvgprs
/* Anything else left to do? */
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_SAVE_NVGPRS)
beq .ret_from_except_lite
/* Re-enable interrupts */
mfmsr r10
ori r10,r10,MSR_EE
mtmsrd r10,1
andi. r0,r9,_TIF_SAVE_NVGPRS
bne save_user_nvgprs
/* If tracing, re-enable interrupts and do it */
save_user_nvgprs_cont:
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
beq 5f
addi r3,r1,STACK_FRAME_OVERHEAD
bl .do_syscall_trace_leave
REST_NVGPRS(r1)
ld r3,GPR3(r1)
ld r5,_CCR(r1)
clrrdi r12,r1,THREAD_SHIFT
b syscall_exit_trace_cont
/* Stuff to do on exit from a system call. */
syscall_exit_work:
std r3,GPR3(r1)
std r5,_CCR(r1)
/* Disable interrupts again and handle other work if any */
5: mfmsr r10
rldicl r10,r10,48,1
rotldi r10,r10,16
mtmsrd r10,1
b .ret_from_except_lite
/* Save non-volatile GPRs, if not already saved. */
......@@ -252,6 +282,52 @@ _GLOBAL(save_nvgprs)
std r0,_TRAP(r1)
blr
save_user_nvgprs:
ld r10,TI_SIGFRAME(r12)
andi. r0,r9,_TIF_32BIT
beq- save_user_nvgprs_64
/* 32-bit save to userspace */
.macro savewords start, end
1: stw \start,4*(\start)(r10)
.section __ex_table,"a"
.align 3
.llong 1b,save_user_nvgprs_fault
.previous
.if \end - \start
savewords "(\start+1)",\end
.endif
.endm
savewords 14,31
b save_user_nvgprs_cont
save_user_nvgprs_64:
/* 64-bit save to userspace */
.macro savelongs start, end
1: std \start,8*(\start)(r10)
.section __ex_table,"a"
.align 3
.llong 1b,save_user_nvgprs_fault
.previous
.if \end - \start
savelongs "(\start+1)",\end
.endif
.endm
savelongs 14,31
b save_user_nvgprs_cont
save_user_nvgprs_fault:
li r3,11 /* SIGSEGV */
ld r4,TI_TASK(r12)
bl .force_sigsegv
clrrdi r12,r1,THREAD_SHIFT
ld r9,TI_FLAGS(r12)
b save_user_nvgprs_cont
/*
* The sigsuspend and rt_sigsuspend system calls can call do_signal
* and thus put the process into the stopped state where we might
......@@ -260,35 +336,6 @@ _GLOBAL(save_nvgprs)
* the C code. Similarly, fork, vfork and clone need the full
* register state on the stack so that it can be copied to the child.
*/
_GLOBAL(ppc32_sigsuspend)
bl .save_nvgprs
bl .compat_sys_sigsuspend
b 70f
_GLOBAL(ppc64_rt_sigsuspend)
bl .save_nvgprs
bl .sys_rt_sigsuspend
b 70f
_GLOBAL(ppc32_rt_sigsuspend)
bl .save_nvgprs
bl .compat_sys_rt_sigsuspend
70: cmpdi 0,r3,0
/* If it returned an error, we need to return via syscall_exit to set
the SO bit in cr0 and potentially stop for ptrace. */
bne syscall_exit
/* If sigsuspend() returns zero, we are going into a signal handler. We
may need to call audit_syscall_exit() to mark the exit from sigsuspend() */
#ifdef CONFIG_AUDITSYSCALL
ld r3,PACACURRENT(r13)
ld r4,AUDITCONTEXT(r3)
cmpdi 0,r4,0
beq .ret_from_except /* No audit_context: Leave immediately. */
li r4, 2 /* AUDITSC_FAILURE */
li r5,-4 /* It's always -EINTR */
bl .audit_syscall_exit
#endif
b .ret_from_except
_GLOBAL(ppc_fork)
bl .save_nvgprs
......@@ -305,37 +352,6 @@ _GLOBAL(ppc_clone)
bl .sys_clone
b syscall_exit
_GLOBAL(ppc32_swapcontext)
bl .save_nvgprs
bl .compat_sys_swapcontext
b 80f
_GLOBAL(ppc64_swapcontext)
bl .save_nvgprs
bl .sys_swapcontext
b 80f
_GLOBAL(ppc32_sigreturn)
bl .compat_sys_sigreturn
b 80f
_GLOBAL(ppc32_rt_sigreturn)
bl .compat_sys_rt_sigreturn
b 80f
_GLOBAL(ppc64_rt_sigreturn)
bl .sys_rt_sigreturn
80: cmpdi 0,r3,0
blt syscall_exit
clrrdi r4,r1,THREAD_SHIFT
ld r4,TI_FLAGS(r4)
andi. r4,r4,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
beq+ 81f
addi r3,r1,STACK_FRAME_OVERHEAD
bl .do_syscall_trace_leave
81: b .ret_from_except
_GLOBAL(ret_from_fork)
bl .schedule_tail
REST_NVGPRS(r1)
......@@ -674,7 +690,7 @@ _GLOBAL(enter_rtas)
/* Setup our real return addr */
SET_REG_TO_LABEL(r4,.rtas_return_loc)
SET_REG_TO_CONST(r9,KERNELBASE)
SET_REG_TO_CONST(r9,PAGE_OFFSET)
sub r4,r4,r9
mtlr r4
......@@ -702,7 +718,7 @@ _GLOBAL(enter_rtas)
_STATIC(rtas_return_loc)
/* relocation is off at this point */
mfspr r4,SPRN_SPRG3 /* Get PACA */
SET_REG_TO_CONST(r5, KERNELBASE)
SET_REG_TO_CONST(r5, PAGE_OFFSET)
sub r4,r4,r5 /* RELOC the PACA base pointer */
mfmsr r6
......
arch/powerpc/kernel/head_32.S
View file @ 6150c325
......@@ -120,10 +120,25 @@ __start:
* because OF may have I/O devices mapped into that area
* (particularly on CHRP).
*/
#ifdef CONFIG_PPC_MULTIPLATFORM
cmpwi 0,r5,0
beq 1f
bl prom_init
trap
#endif
/*
* Check for BootX signature when supporting PowerMac and branch to
* appropriate trampoline if it's present
*/
#ifdef CONFIG_PPC_PMAC
1: lis r31,0x426f
ori r31,r31,0x6f58
cmpw 0,r3,r31
bne 1f
bl bootx_init
trap
#endif /* CONFIG_PPC_PMAC */
1: mr r31,r3 /* save parameters */
mr r30,r4
......@@ -153,6 +168,9 @@ __after_mmu_off:
bl flush_tlbs
bl initial_bats
#if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT)
bl setup_disp_bat
#endif
/*
* Call setup_cpu for CPU 0 and initialize 6xx Idle
......@@ -450,16 +468,11 @@ SystemCall:
* by executing an altivec instruction.
*/
. = 0xf00
b Trap_0f
b PerformanceMonitor
. = 0xf20
b AltiVecUnavailable
Trap_0f:
EXCEPTION_PROLOG
addi r3,r1,STACK_FRAME_OVERHEAD
EXC_XFER_EE(0xf00, unknown_exception)
/*
* Handle TLB miss for instruction on 603/603e.
* Note: we get an alternate set of r0 - r3 to use automatically.
......@@ -703,6 +716,11 @@ AltiVecUnavailable:
#endif /* CONFIG_ALTIVEC */
EXC_XFER_EE_LITE(0xf20, altivec_unavailable_exception)
PerformanceMonitor:
EXCEPTION_PROLOG
addi r3,r1,STACK_FRAME_OVERHEAD
EXC_XFER_STD(0xf00, performance_monitor_exception)
#ifdef CONFIG_ALTIVEC
/* Note that the AltiVec support is closely modeled after the FP
* support. Changes to one are likely to be applicable to the
......@@ -1306,6 +1324,32 @@ initial_bats:
blr
#if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT)
setup_disp_bat:
/*
* setup the display bat prepared for us in prom.c
*/
mflr r8
bl reloc_offset
mtlr r8
addis r8,r3,disp_BAT@ha
addi r8,r8,disp_BAT@l
cmpwi cr0,r8,0
beqlr
lwz r11,0(r8)
lwz r8,4(r8)
mfspr r9,SPRN_PVR
rlwinm r9,r9,16,16,31 /* r9 = 1 for 601, 4 for 604 */
cmpwi 0,r9,1
beq 1f
mtspr SPRN_DBAT3L,r8
mtspr SPRN_DBAT3U,r11
blr
1: mtspr SPRN_IBAT3L,r8
mtspr SPRN_IBAT3U,r11
blr
#endif /* !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT) */
#ifdef CONFIG_8260
/* Jump into the system reset for the rom.
* We first disable the MMU, and then jump to the ROM reset address.
......
arch/powerpc/kernel/head_64.S
View file @ 6150c325
......@@ -154,11 +154,15 @@ _GLOBAL(__secondary_hold)
bne 100b
#ifdef CONFIG_HMT
b .hmt_init
LOADADDR(r4, .hmt_init)
mtctr r4
bctr
#else
#ifdef CONFIG_SMP
LOADADDR(r4, .pSeries_secondary_smp_init)
mtctr r4
mr r3,r24
b .pSeries_secondary_smp_init
bctr
#else
BUG_OPCODE
#endif
......@@ -200,6 +204,20 @@ exception_marker:
#define EX_R3 64
#define EX_LR 72
/*
* We're short on space and time in the exception prolog, so we can't use
* the normal LOADADDR macro. Normally we just need the low halfword of the
* address, but for Kdump we need the whole low word.
*/
#ifdef CONFIG_CRASH_DUMP
#define LOAD_HANDLER(reg, label) \
oris reg,reg,(label)@h; /* virt addr of handler ... */ \
ori reg,reg,(label)@l; /* .. and the rest */
#else
#define LOAD_HANDLER(reg, label) \
ori reg,reg,(label)@l; /* virt addr of handler ... */
#endif
#define EXCEPTION_PROLOG_PSERIES(area, label) \
mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \
std r9,area+EX_R9(r13); /* save r9 - r12 */ \
......@@ -212,7 +230,7 @@ exception_marker:
clrrdi r12,r13,32; /* get high part of &label */ \
mfmsr r10; \
mfspr r11,SPRN_SRR0; /* save SRR0 */ \
ori r12,r12,(label)@l; /* virt addr of handler */ \
LOAD_HANDLER(r12,label) \
ori r10,r10,MSR_IR|MSR_DR|MSR_RI; \
mtspr SPRN_SRR0,r12; \
mfspr r12,SPRN_SRR1; /* and SRR1 */ \
......@@ -553,6 +571,7 @@ slb_miss_user_pseries:
* Vectors for the FWNMI option. Share common code.
*/
.globl system_reset_fwnmi
.align 7
system_reset_fwnmi:
HMT_MEDIUM
mtspr SPRN_SPRG1,r13 /* save r13 */
......@@ -560,6 +579,7 @@ system_reset_fwnmi:
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common)
.globl machine_check_fwnmi
.align 7
machine_check_fwnmi:
HMT_MEDIUM
mtspr SPRN_SPRG1,r13 /* save r13 */
......@@ -726,7 +746,8 @@ iSeries_secondary_smp_loop:
decrementer_iSeries_masked:
li r11,1
stb r11,PACALPPACA+LPPACADECRINT(r13)
lwz r12,PACADEFAULTDECR(r13)
LOADBASE(r12,tb_ticks_per_jiffy)
lwz r12,OFF(tb_ticks_per_jiffy)(r12)
mtspr SPRN_DEC,r12
/* fall through */
......@@ -1345,7 +1366,7 @@ _GLOBAL(do_stab_bolted)
* fixed address (the linker can't compute (u64)&initial_stab >>
* PAGE_SHIFT).
*/
. = STAB0_PHYS_ADDR /* 0x6000 */
. = STAB0_OFFSET /* 0x6000 */
.globl initial_stab
initial_stab:
.space 4096
......@@ -1485,11 +1506,13 @@ _STATIC(__mmu_off)
*
*/
_GLOBAL(__start_initialization_multiplatform)
#ifdef CONFIG_PPC_MULTIPLATFORM
/*
* Are we booted from a PROM Of-type client-interface ?
*/
cmpldi cr0,r5,0
bne .__boot_from_prom /* yes -> prom */
#endif
/* Save parameters */
mr r31,r3
......@@ -1510,6 +1533,7 @@ _GLOBAL(__start_initialization_multiplatform)
bl .__mmu_off
b .__after_prom_start
#ifdef CONFIG_PPC_MULTIPLATFORM
_STATIC(__boot_from_prom)
/* Save parameters */
mr r31,r3
......@@ -1542,6 +1566,7 @@ _STATIC(__boot_from_prom)
bl .prom_init
/* We never return */
trap
#endif
/*
* At this point, r3 contains the physical address we are running at,
......@@ -1550,7 +1575,7 @@ _STATIC(__boot_from_prom)
_STATIC(__after_prom_start)
/*
* We need to run with __start at physical address 0.
* We need to run with __start at physical address PHYSICAL_START.
* This will leave some code in the first 256B of
* real memory, which are reserved for software use.
* The remainder of the first page is loaded with the fixed
......@@ -1565,7 +1590,7 @@ _STATIC(__after_prom_start)
mr r26,r3
SET_REG_TO_CONST(r27,KERNELBASE)
li r3,0 /* target addr */
LOADADDR(r3, PHYSICAL_START) /* target addr */
// XXX FIXME: Use phys returned by OF (r30)
add r4,r27,r26 /* source addr */
......@@ -1846,7 +1871,7 @@ _STATIC(start_here_multiplatform)
mulli r13,r27,PACA_SIZE /* Calculate vaddr of right paca */
add r13,r13,r24 /* for this processor. */
add r13,r13,r26 /* convert to physical addr */
mtspr SPRN_SPRG3,r13 /* PPPBBB: Temp... -Peter */
mtspr SPRN_SPRG3,r13
/* Do very early kernel initializations, including initial hash table,
* stab and slb setup before we turn on relocation. */
......
arch/powerpc/kernel/ibmebus.c 0 → 100644
View file @ 6150c325
/*
* IBM PowerPC IBM eBus Infrastructure Support.
*
* Copyright (c) 2005 IBM Corporation
* Heiko J Schick <schickhj@de.ibm.com>
*
* All rights reserved.
*
* This source code is distributed under a dual license of GPL v2.0 and OpenIB
* BSD.
*
* OpenIB BSD License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/init.h>
#include <linux/console.h>
#include <linux/kobject.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <asm/ibmebus.h>
#include <asm/abs_addr.h>
static struct ibmebus_dev ibmebus_bus_device = { /* fake "parent" device */
.name = ibmebus_bus_device.ofdev.dev.bus_id,
.ofdev.dev.bus_id = "ibmebus",
.ofdev.dev.bus = &ibmebus_bus_type,
};
static void *ibmebus_alloc_coherent(struct device *dev,
size_t size,
dma_addr_t *dma_handle,
gfp_t flag)
{
void *mem;
mem = kmalloc(size, flag);
*dma_handle = (dma_addr_t)mem;
return mem;
}
static void ibmebus_free_coherent(struct device *dev,
size_t size, void *vaddr,
dma_addr_t dma_handle)
{
kfree(vaddr);
}
static dma_addr_t ibmebus_map_single(struct device *dev,
void *ptr,
size_t size,
enum dma_data_direction direction)
{
return (dma_addr_t)(ptr);
}
static void ibmebus_unmap_single(struct device *dev,
dma_addr_t dma_addr,
size_t size,
enum dma_data_direction direction)
{
return;
}
static int ibmebus_map_sg(struct device *dev,
struct scatterlist *sg,
int nents, enum dma_data_direction direction)
{
int i;
for (i = 0; i < nents; i++) {
sg[i].dma_address = (dma_addr_t)page_address(sg[i].page)
+ sg[i].offset;
sg[i].dma_length = sg[i].length;
}
return nents;
}
static void ibmebus_unmap_sg(struct device *dev,
struct scatterlist *sg,
int nents, enum dma_data_direction direction)
{
return;
}
static int ibmebus_dma_supported(struct device *dev, u64 mask)
{
return 1;
}
struct dma_mapping_ops ibmebus_dma_ops = {
.alloc_coherent = ibmebus_alloc_coherent,
.free_coherent = ibmebus_free_coherent,
.map_single = ibmebus_map_single,
.unmap_single = ibmebus_unmap_single,
.map_sg = ibmebus_map_sg,
.unmap_sg = ibmebus_unmap_sg,
.dma_supported = ibmebus_dma_supported,
};
static int ibmebus_bus_probe(struct device *dev)
{
struct ibmebus_dev *ibmebusdev = to_ibmebus_dev(dev);
struct ibmebus_driver *ibmebusdrv = to_ibmebus_driver(dev->driver);
const struct of_device_id *id;
int error = -ENODEV;
if (!ibmebusdrv->probe)
return error;
id = of_match_device(ibmebusdrv->id_table, &ibmebusdev->ofdev);
if (id) {
error = ibmebusdrv->probe(ibmebusdev, id);
}
return error;
}
static int ibmebus_bus_remove(struct device *dev)
{
struct ibmebus_dev *ibmebusdev = to_ibmebus_dev(dev);
struct ibmebus_driver *ibmebusdrv = to_ibmebus_driver(dev->driver);
if (ibmebusdrv->remove) {
return ibmebusdrv->remove(ibmebusdev);
}
return 0;
}
static void __devinit ibmebus_dev_release(struct device *dev)
{
of_node_put(to_ibmebus_dev(dev)->ofdev.node);
kfree(to_ibmebus_dev(dev));
}
static ssize_t ibmebusdev_show_name(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", to_ibmebus_dev(dev)->name);
}
static DEVICE_ATTR(name, S_IRUSR | S_IRGRP | S_IROTH, ibmebusdev_show_name,
NULL);
static struct ibmebus_dev* __devinit ibmebus_register_device_common(
struct ibmebus_dev *dev, char *name)
{
int err = 0;
dev->name = name;
dev->ofdev.dev.parent = &ibmebus_bus_device.ofdev.dev;
dev->ofdev.dev.bus = &ibmebus_bus_type;
dev->ofdev.dev.release = ibmebus_dev_release;
/* An ibmebusdev is based on a of_device. We have to change the
* bus type to use our own DMA mapping operations.
*/
if ((err = of_device_register(&dev->ofdev)) != 0) {
printk(KERN_ERR "%s: failed to register device (%d).\n",
__FUNCTION__, err);
return NULL;
}
device_create_file(&dev->ofdev.dev, &dev_attr_name);
return dev;
}
static struct ibmebus_dev* __devinit ibmebus_register_device_node(
struct device_node *dn)
{
struct ibmebus_dev *dev;
char *loc_code;
int length;
loc_code = (char *)get_property(dn, "ibm,loc-code", NULL);
if (!loc_code) {
printk(KERN_WARNING "%s: node %s missing 'ibm,loc-code'\n",
__FUNCTION__, dn->name ? dn->name : "<unknown>");
return NULL;
}
if (strlen(loc_code) == 0) {
printk(KERN_WARNING "%s: 'ibm,loc-code' is invalid\n",
__FUNCTION__);
return NULL;
}
dev = kmalloc(sizeof(struct ibmebus_dev), GFP_KERNEL);
if (!dev) {
return NULL;
}
memset(dev, 0, sizeof(struct ibmebus_dev));
dev->ofdev.node = of_node_get(dn);
length = strlen(loc_code);
memcpy(dev->ofdev.dev.bus_id, loc_code
+ (length - min(length, BUS_ID_SIZE - 1)),
min(length, BUS_ID_SIZE - 1));
/* Register with generic device framework. */
if (ibmebus_register_device_common(dev, dn->name) == NULL) {
kfree(dev);
return NULL;
}
return dev;
}
static void ibmebus_probe_of_nodes(char* name)
{
struct device_node *dn = NULL;
while ((dn = of_find_node_by_name(dn, name))) {
if (ibmebus_register_device_node(dn) == NULL) {
of_node_put(dn);
return;
}
}
of_node_put(dn);
return;
}
static void ibmebus_add_devices_by_id(struct of_device_id *idt)
{
while (strlen(idt->name) > 0) {
ibmebus_probe_of_nodes(idt->name);
idt++;
}
return;
}
static int ibmebus_match_helper(struct device *dev, void *data)
{
if (strcmp((char*)data, to_ibmebus_dev(dev)->name) == 0)
return 1;
return 0;
}
static int ibmebus_unregister_device(struct device *dev)
{
device_remove_file(dev, &dev_attr_name);
of_device_unregister(to_of_device(dev));
return 0;
}
static void ibmebus_remove_devices_by_id(struct of_device_id *idt)
{
struct device *dev;
while (strlen(idt->name) > 0) {
while ((dev = bus_find_device(&ibmebus_bus_type, NULL,
(void*)idt->name,
ibmebus_match_helper))) {
ibmebus_unregister_device(dev);
}
idt++;
}
return;
}
int ibmebus_register_driver(struct ibmebus_driver *drv)
{
int err = 0;
drv->driver.name = drv->name;
drv->driver.bus = &ibmebus_bus_type;
drv->driver.probe = ibmebus_bus_probe;
drv->driver.remove = ibmebus_bus_remove;
if ((err = driver_register(&drv->driver) != 0))
return err;
ibmebus_add_devices_by_id(drv->id_table);
return 0;
}
EXPORT_SYMBOL(ibmebus_register_driver);
void ibmebus_unregister_driver(struct ibmebus_driver *drv)
{
driver_unregister(&drv->driver);
ibmebus_remove_devices_by_id(drv->id_table);
}
EXPORT_SYMBOL(ibmebus_unregister_driver);
int ibmebus_request_irq(struct ibmebus_dev *dev,
u32 ist,
irqreturn_t (*handler)(int, void*, struct pt_regs *),
unsigned long irq_flags, const char * devname,
void *dev_id)
{
unsigned int irq = virt_irq_create_mapping(ist);
if (irq == NO_IRQ)
return -EINVAL;
irq = irq_offset_up(irq);
return request_irq(irq, handler,
irq_flags, devname, dev_id);
}
EXPORT_SYMBOL(ibmebus_request_irq);
void ibmebus_free_irq(struct ibmebus_dev *dev, u32 ist, void *dev_id)
{
unsigned int irq = virt_irq_create_mapping(ist);
irq = irq_offset_up(irq);
free_irq(irq, dev_id);
return;
}
EXPORT_SYMBOL(ibmebus_free_irq);
static int ibmebus_bus_match(struct device *dev, struct device_driver *drv)
{
const struct ibmebus_dev *ebus_dev = to_ibmebus_dev(dev);
struct ibmebus_driver *ebus_drv = to_ibmebus_driver(drv);
const struct of_device_id *ids = ebus_drv->id_table;
const struct of_device_id *found_id;
if (!ids)
return 0;
found_id = of_match_device(ids, &ebus_dev->ofdev);
if (found_id)
return 1;
return 0;
}
struct bus_type ibmebus_bus_type = {
.name = "ibmebus",
.match = ibmebus_bus_match,
};
EXPORT_SYMBOL(ibmebus_bus_type);
static int __init ibmebus_bus_init(void)
{
int err;
printk(KERN_INFO "IBM eBus Device Driver\n");
err = bus_register(&ibmebus_bus_type);
if (err) {
printk(KERN_ERR ":%s: failed to register IBM eBus.\n",
__FUNCTION__);
return err;
}
err = device_register(&ibmebus_bus_device.ofdev.dev);
if (err) {
printk(KERN_WARNING "%s: device_register returned %i\n",
__FUNCTION__, err);
bus_unregister(&ibmebus_bus_type);
return err;
}
return 0;
}
__initcall(ibmebus_bus_init);
arch/powerpc/kernel/irq.c
View file @ 6150c325
......@@ -31,7 +31,6 @@
* to reduce code space and undefined function references.
*/
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/threads.h>
#include <linux/kernel_stat.h>
......@@ -44,18 +43,12 @@
#include <linux/config.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/proc_fs.h>
#include <linux/random.h>
#include <linux/seq_file.h>
#include <linux/cpumask.h>
#include <linux/profile.h>
#include <linux/bitops.h>
#ifdef CONFIG_PPC64
#include <linux/kallsyms.h>
#endif
#include <asm/uaccess.h>
#include <asm/system.h>
......@@ -66,8 +59,7 @@
#include <asm/prom.h>
#include <asm/ptrace.h>
#include <asm/machdep.h>
#ifdef CONFIG_PPC64
#include <asm/iseries/it_lp_queue.h>
#ifdef CONFIG_PPC_ISERIES
#include <asm/paca.h>
#endif
......@@ -78,10 +70,6 @@ EXPORT_SYMBOL(__irq_offset_value);
static int ppc_spurious_interrupts;
#if defined(CONFIG_PPC_ISERIES) && defined(CONFIG_SMP)
extern void iSeries_smp_message_recv(struct pt_regs *);
#endif
#ifdef CONFIG_PPC32
#define NR_MASK_WORDS ((NR_IRQS + 31) / 32)
......@@ -195,49 +183,6 @@ void fixup_irqs(cpumask_t map)
}
#endif
#ifdef CONFIG_PPC_ISERIES
void do_IRQ(struct pt_regs *regs)
{
struct paca_struct *lpaca;
irq_enter();
#ifdef CONFIG_DEBUG_STACKOVERFLOW
/* Debugging check for stack overflow: is there less than 2KB free? */
{
long sp;
sp = __get_SP() & (THREAD_SIZE-1);
if (unlikely(sp < (sizeof(struct thread_info) + 2048))) {
printk("do_IRQ: stack overflow: %ld\n",
sp - sizeof(struct thread_info));
dump_stack();
}
}
#endif
lpaca = get_paca();
#ifdef CONFIG_SMP
if (lpaca->lppaca.int_dword.fields.ipi_cnt) {
lpaca->lppaca.int_dword.fields.ipi_cnt = 0;
iSeries_smp_message_recv(regs);
}
#endif /* CONFIG_SMP */
if (hvlpevent_is_pending())
process_hvlpevents(regs);
irq_exit();
if (lpaca->lppaca.int_dword.fields.decr_int) {
lpaca->lppaca.int_dword.fields.decr_int = 0;
/* Signal a fake decrementer interrupt */
timer_interrupt(regs);
}
}
#else /* CONFIG_PPC_ISERIES */
void do_IRQ(struct pt_regs *regs)
{
int irq;
......@@ -286,16 +231,24 @@ void do_IRQ(struct pt_regs *regs)
} else
#endif
__do_IRQ(irq, regs);
} else
#ifdef CONFIG_PPC32
if (irq != -2)
#endif
/* That's not SMP safe ... but who cares ? */
ppc_spurious_interrupts++;
} else if (irq != -2)
/* That's not SMP safe ... but who cares ? */
ppc_spurious_interrupts++;
irq_exit();
}
#endif /* CONFIG_PPC_ISERIES */
#ifdef CONFIG_PPC_ISERIES
{
struct paca_struct *lpaca = get_paca();
if (lpaca->lppaca.int_dword.fields.decr_int) {
lpaca->lppaca.int_dword.fields.decr_int = 0;
/* Signal a fake decrementer interrupt */
timer_interrupt(regs);
}
}
#endif
}
void __init init_IRQ(void)
{
......
arch/powerpc/kernel/legacy_serial.c 0 → 100644
View file @ 6150c325
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