Commit e3d2f927 authored by Linus Torvalds's avatar Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
  parisc: convert to generic compat_sys_ptrace
  parisc: add rtc platform driver
  parisc: initialize unwinder much earlier
  parisc: add new syscalls
  parisc: hijack jump to start_kernel
  parisc: add pdc_coproc_cfg_unlocked and set_firmware_width_unlocked
  parisc: move include/asm-parisc to arch/parisc/include/asm
  parisc: move pdc_result to real2.S
  parisc: unify CCIO_COLLECT_STATS implementation
  parisc: add arch/parisc/kernel/.gitignore
  parisc: ropes.h - fix <asm-parisc/*> -> <asm/*>
  parisc: parisc-agp - fix <asm-parisc/*> -> <asm/*>

Resolve remove/rename conflict: include/asm-parisc/a.out.h is no longer
relevant.
parents a9b6148d 81e192d6
......@@ -9,6 +9,8 @@ config PARISC
def_bool y
select HAVE_IDE
select HAVE_OPROFILE
select RTC_CLASS
select RTC_DRV_PARISC
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used
in many of their workstations & servers (HP9000 700 and 800 series,
......
......@@ -332,6 +332,9 @@
#define BOOT_CONSOLE_SPA_OFFSET 0x3c4
#define BOOT_CONSOLE_PATH_OFFSET 0x3a8
/* size of the pdc_result buffer for firmware.c */
#define NUM_PDC_RESULT 32
#if !defined(__ASSEMBLY__)
#ifdef __KERNEL__
......@@ -600,6 +603,7 @@ int pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsi
int pdc_chassis_disp(unsigned long disp);
int pdc_chassis_warn(unsigned long *warn);
int pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info);
int pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info);
int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index,
void *iodc_data, unsigned int iodc_data_size);
int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info,
......@@ -638,6 +642,7 @@ int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
#endif
void set_firmware_width(void);
void set_firmware_width_unlocked(void);
int pdc_do_firm_test_reset(unsigned long ftc_bitmap);
int pdc_do_reset(void);
int pdc_soft_power_info(unsigned long *power_reg);
......
......@@ -47,6 +47,16 @@ struct pt_regs {
#define task_regs(task) ((struct pt_regs *) ((char *)(task) + TASK_REGS))
#define __ARCH_WANT_COMPAT_SYS_PTRACE
struct task_struct;
#define arch_has_single_step() 1
void user_disable_single_step(struct task_struct *task);
void user_enable_single_step(struct task_struct *task);
#define arch_has_block_step() 1
void user_enable_block_step(struct task_struct *task);
/* XXX should we use iaoq[1] or iaoq[0] ? */
#define user_mode(regs) (((regs)->iaoq[0] & 3) ? 1 : 0)
#define user_space(regs) (((regs)->iasq[1] != 0) ? 1 : 0)
......
#ifndef _ASM_PARISC_ROPES_H_
#define _ASM_PARISC_ROPES_H_
#include <asm-parisc/parisc-device.h>
#include <asm/parisc-device.h>
#ifdef CONFIG_64BIT
/* "low end" PA8800 machines use ZX1 chipset: PAT PDC and only run 64-bit */
......
......@@ -801,8 +801,14 @@
#define __NR_timerfd_create (__NR_Linux + 306)
#define __NR_timerfd_settime (__NR_Linux + 307)
#define __NR_timerfd_gettime (__NR_Linux + 308)
#define __NR_Linux_syscalls (__NR_timerfd_gettime + 1)
#define __NR_signalfd4 (__NR_Linux + 309)
#define __NR_eventfd2 (__NR_Linux + 310)
#define __NR_epoll_create1 (__NR_Linux + 311)
#define __NR_dup3 (__NR_Linux + 312)
#define __NR_pipe2 (__NR_Linux + 313)
#define __NR_inotify_init1 (__NR_Linux + 314)
#define __NR_Linux_syscalls (__NR_inotify_init1 + 1)
#define __IGNORE_select /* newselect */
......
......@@ -74,4 +74,6 @@ void unwind_frame_init_running(struct unwind_frame_info *info, struct pt_regs *r
int unwind_once(struct unwind_frame_info *info);
int unwind_to_user(struct unwind_frame_info *info);
int unwind_init(void);
#endif
......@@ -290,5 +290,8 @@ int main(void)
DEFINE(EXCDATA_IP, offsetof(struct exception_data, fault_ip));
DEFINE(EXCDATA_SPACE, offsetof(struct exception_data, fault_space));
DEFINE(EXCDATA_ADDR, offsetof(struct exception_data, fault_addr));
BLANK();
DEFINE(ASM_PDC_RESULT_SIZE, NUM_PDC_RESULT * sizeof(unsigned long));
BLANK();
return 0;
}
......@@ -71,8 +71,8 @@
#include <asm/processor.h> /* for boot_cpu_data */
static DEFINE_SPINLOCK(pdc_lock);
static unsigned long pdc_result[32] __attribute__ ((aligned (8)));
static unsigned long pdc_result2[32] __attribute__ ((aligned (8)));
extern unsigned long pdc_result[NUM_PDC_RESULT];
extern unsigned long pdc_result2[NUM_PDC_RESULT];
#ifdef CONFIG_64BIT
#define WIDE_FIRMWARE 0x1
......@@ -150,26 +150,40 @@ static void convert_to_wide(unsigned long *addr)
#endif
}
#ifdef CONFIG_64BIT
void __init set_firmware_width_unlocked(void)
{
int ret;
ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES,
__pa(pdc_result), 0);
convert_to_wide(pdc_result);
if (pdc_result[0] != NARROW_FIRMWARE)
parisc_narrow_firmware = 0;
}
/**
* set_firmware_width - Determine if the firmware is wide or narrow.
*
* This function must be called before any pdc_* function that uses the convert_to_wide
* function.
* This function must be called before any pdc_* function that uses the
* convert_to_wide function.
*/
void __init set_firmware_width(void)
{
#ifdef CONFIG_64BIT
int retval;
unsigned long flags;
spin_lock_irqsave(&pdc_lock, flags);
retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
convert_to_wide(pdc_result);
if(pdc_result[0] != NARROW_FIRMWARE)
parisc_narrow_firmware = 0;
set_firmware_width_unlocked();
spin_unlock_irqrestore(&pdc_lock, flags);
#endif
}
#else
void __init set_firmware_width_unlocked(void) {
return;
}
void __init set_firmware_width(void) {
return;
}
#endif /*CONFIG_64BIT*/
/**
* pdc_emergency_unlock - Unlock the linux pdc lock
......@@ -288,6 +302,20 @@ int pdc_chassis_warn(unsigned long *warn)
return retval;
}
int __init pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info)
{
int ret;
ret = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
convert_to_wide(pdc_result);
pdc_coproc_info->ccr_functional = pdc_result[0];
pdc_coproc_info->ccr_present = pdc_result[1];
pdc_coproc_info->revision = pdc_result[17];
pdc_coproc_info->model = pdc_result[18];
return ret;
}
/**
* pdc_coproc_cfg - To identify coprocessors attached to the processor.
* @pdc_coproc_info: Return buffer address.
......@@ -297,19 +325,14 @@ int pdc_chassis_warn(unsigned long *warn)
*/
int __init pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info)
{
int retval;
int ret;
unsigned long flags;
spin_lock_irqsave(&pdc_lock, flags);
retval = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
convert_to_wide(pdc_result);
pdc_coproc_info->ccr_functional = pdc_result[0];
pdc_coproc_info->ccr_present = pdc_result[1];
pdc_coproc_info->revision = pdc_result[17];
pdc_coproc_info->model = pdc_result[18];
ret = pdc_coproc_cfg_unlocked(pdc_coproc_info);
spin_unlock_irqrestore(&pdc_lock, flags);
return retval;
return ret;
}
/**
......
......@@ -121,7 +121,7 @@ $pgt_fill_loop:
copy %r0,%r2
/* And the RFI Target address too */
load32 start_kernel,%r11
load32 start_parisc,%r11
/* And the initial task pointer */
load32 init_thread_union,%r6
......
......@@ -4,6 +4,7 @@
* Copyright (C) 2000 Hewlett-Packard Co, Linuxcare Inc.
* Copyright (C) 2000 Matthew Wilcox <matthew@wil.cx>
* Copyright (C) 2000 David Huggins-Daines <dhd@debian.org>
* Copyright (C) 2008 Helge Deller <deller@gmx.de>
*/
#include <linux/kernel.h>
......@@ -27,15 +28,149 @@
/* PSW bits we allow the debugger to modify */
#define USER_PSW_BITS (PSW_N | PSW_V | PSW_CB)
#undef DEBUG_PTRACE
/*
* Called by kernel/ptrace.c when detaching..
*
* Make sure single step bits etc are not set.
*/
void ptrace_disable(struct task_struct *task)
{
task->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP);
/* make sure the trap bits are not set */
pa_psw(task)->r = 0;
pa_psw(task)->t = 0;
pa_psw(task)->h = 0;
pa_psw(task)->l = 0;
}
/*
* The following functions are called by ptrace_resume() when
* enabling or disabling single/block tracing.
*/
void user_disable_single_step(struct task_struct *task)
{
ptrace_disable(task);
}
void user_enable_single_step(struct task_struct *task)
{
task->ptrace &= ~PT_BLOCKSTEP;
task->ptrace |= PT_SINGLESTEP;
if (pa_psw(task)->n) {
struct siginfo si;
/* Nullified, just crank over the queue. */
task_regs(task)->iaoq[0] = task_regs(task)->iaoq[1];
task_regs(task)->iasq[0] = task_regs(task)->iasq[1];
task_regs(task)->iaoq[1] = task_regs(task)->iaoq[0] + 4;
pa_psw(task)->n = 0;
pa_psw(task)->x = 0;
pa_psw(task)->y = 0;
pa_psw(task)->z = 0;
pa_psw(task)->b = 0;
ptrace_disable(task);
/* Don't wake up the task, but let the
parent know something happened. */
si.si_code = TRAP_TRACE;
si.si_addr = (void __user *) (task_regs(task)->iaoq[0] & ~3);
si.si_signo = SIGTRAP;
si.si_errno = 0;
force_sig_info(SIGTRAP, &si, task);
/* notify_parent(task, SIGCHLD); */
return;
}
/* Enable recovery counter traps. The recovery counter
* itself will be set to zero on a task switch. If the
* task is suspended on a syscall then the syscall return
* path will overwrite the recovery counter with a suitable
* value such that it traps once back in user space. We
* disable interrupts in the tasks PSW here also, to avoid
* interrupts while the recovery counter is decrementing.
*/
pa_psw(task)->r = 1;
pa_psw(task)->t = 0;
pa_psw(task)->h = 0;
pa_psw(task)->l = 0;
}
void user_enable_block_step(struct task_struct *task)
{
task->ptrace &= ~PT_SINGLESTEP;
task->ptrace |= PT_BLOCKSTEP;
/* Enable taken branch trap. */
pa_psw(task)->r = 0;
pa_psw(task)->t = 1;
pa_psw(task)->h = 0;
pa_psw(task)->l = 0;
}
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
unsigned long tmp;
long ret = -EIO;
switch (request) {
/* Read the word at location addr in the USER area. For ptraced
processes, the kernel saves all regs on a syscall. */
case PTRACE_PEEKUSR:
if ((addr & (sizeof(long)-1)) ||
(unsigned long) addr >= sizeof(struct pt_regs))
break;
tmp = *(unsigned long *) ((char *) task_regs(child) + addr);
ret = put_user(tmp, (unsigned long *) data);
break;
/* Write the word at location addr in the USER area. This will need
to change when the kernel no longer saves all regs on a syscall.
FIXME. There is a problem at the moment in that r3-r18 are only
saved if the process is ptraced on syscall entry, and even then
those values are overwritten by actual register values on syscall
exit. */
case PTRACE_POKEUSR:
/* Some register values written here may be ignored in
* entry.S:syscall_restore_rfi; e.g. iaoq is written with
* r31/r31+4, and not with the values in pt_regs.
*/
if (addr == PT_PSW) {
/* Allow writing to Nullify, Divide-step-correction,
* and carry/borrow bits.
* BEWARE, if you set N, and then single step, it won't
* stop on the nullified instruction.
*/
data &= USER_PSW_BITS;
task_regs(child)->gr[0] &= ~USER_PSW_BITS;
task_regs(child)->gr[0] |= data;
ret = 0;
break;
}
if ((addr & (sizeof(long)-1)) ||
(unsigned long) addr >= sizeof(struct pt_regs))
break;
if ((addr >= PT_GR1 && addr <= PT_GR31) ||
addr == PT_IAOQ0 || addr == PT_IAOQ1 ||
(addr >= PT_FR0 && addr <= PT_FR31 + 4) ||
addr == PT_SAR) {
*(unsigned long *) ((char *) task_regs(child) + addr) = data;
ret = 0;
}
break;
default:
ret = ptrace_request(child, request, addr, data);
break;
}
return ret;
}
#ifdef DEBUG_PTRACE
#define DBG(x...) printk(x)
#else
#define DBG(x...)
#endif
#ifdef CONFIG_64BIT
#ifdef CONFIG_COMPAT
/* This function is needed to translate 32 bit pt_regs offsets in to
* 64 bit pt_regs offsets. For example, a 32 bit gdb under a 64 bit kernel
......@@ -61,106 +196,25 @@ static long translate_usr_offset(long offset)
else
return -1;
}
#endif
/*
* Called by kernel/ptrace.c when detaching..
*
* Make sure single step bits etc are not set.
*/
void ptrace_disable(struct task_struct *child)
{
/* make sure the trap bits are not set */
pa_psw(child)->r = 0;
pa_psw(child)->t = 0;
pa_psw(child)->h = 0;
pa_psw(child)->l = 0;
}
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
compat_ulong_t addr, compat_ulong_t data)
{
long ret;
#ifdef DEBUG_PTRACE
long oaddr=addr, odata=data;
#endif
compat_uint_t tmp;
long ret = -EIO;
switch (request) {
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA: {
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
int copied;
unsigned int tmp;
addr &= 0xffffffffL;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
goto out_tsk;
ret = put_user(tmp,(unsigned int *) data);
DBG("sys_ptrace(PEEK%s, %d, %lx, %lx) returning %ld, data %x\n",
request == PTRACE_PEEKTEXT ? "TEXT" : "DATA",
pid, oaddr, odata, ret, tmp);
}
else
#endif
ret = generic_ptrace_peekdata(child, addr, data);
goto out_tsk;
}
/* when I and D space are separate, this will have to be fixed. */
case PTRACE_POKETEXT: /* write the word at location addr. */
case PTRACE_POKEDATA:
ret = 0;
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
unsigned int tmp = (unsigned int)data;
DBG("sys_ptrace(POKE%s, %d, %lx, %lx)\n",
request == PTRACE_POKETEXT ? "TEXT" : "DATA",
pid, oaddr, odata);
addr &= 0xffffffffL;
if (access_process_vm(child, addr, &tmp, sizeof(tmp), 1) == sizeof(tmp))
goto out_tsk;
}
else
#endif
{
if (access_process_vm(child, addr, &data, sizeof(data), 1) == sizeof(data))
goto out_tsk;
}
ret = -EIO;
goto out_tsk;
case PTRACE_PEEKUSR:
if (addr & (sizeof(compat_uint_t)-1))
break;
addr = translate_usr_offset(addr);
if (addr < 0)
break;
/* Read the word at location addr in the USER area. For ptraced
processes, the kernel saves all regs on a syscall. */
case PTRACE_PEEKUSR: {
ret = -EIO;
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
unsigned int tmp;
if (addr & (sizeof(int)-1))
goto out_tsk;
if ((addr = translate_usr_offset(addr)) < 0)
goto out_tsk;
tmp = *(unsigned int *) ((char *) task_regs(child) + addr);
ret = put_user(tmp, (unsigned int *) data);
DBG("sys_ptrace(PEEKUSR, %d, %lx, %lx) returning %ld, addr %lx, data %x\n",
pid, oaddr, odata, ret, addr, tmp);
}
else
#endif
{
unsigned long tmp;
if ((addr & (sizeof(long)-1)) || (unsigned long) addr >= sizeof(struct pt_regs))
goto out_tsk;
tmp = *(unsigned long *) ((char *) task_regs(child) + addr);
ret = put_user(tmp, (unsigned long *) data);
}
goto out_tsk;
}
tmp = *(compat_uint_t *) ((char *) task_regs(child) + addr);
ret = put_user(tmp, (compat_uint_t *) (unsigned long) data);
break;
/* Write the word at location addr in the USER area. This will need
to change when the kernel no longer saves all regs on a syscall.
......@@ -169,185 +223,46 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
those values are overwritten by actual register values on syscall
exit. */
case PTRACE_POKEUSR:
ret = -EIO;
/* Some register values written here may be ignored in
* entry.S:syscall_restore_rfi; e.g. iaoq is written with
* r31/r31+4, and not with the values in pt_regs.
*/
/* PT_PSW=0, so this is valid for 32 bit processes under 64
* bit kernels.
*/
if (addr == PT_PSW) {
/* PT_PSW=0, so this is valid for 32 bit processes
* under 64 bit kernels.
*
* Allow writing to Nullify, Divide-step-correction,
* and carry/borrow bits.
* BEWARE, if you set N, and then single step, it won't
* stop on the nullified instruction.
/* Since PT_PSW==0, it is valid for 32 bit processes
* under 64 bit kernels as well.
*/
DBG("sys_ptrace(POKEUSR, %d, %lx, %lx)\n",
pid, oaddr, odata);
data &= USER_PSW_BITS;
task_regs(child)->gr[0] &= ~USER_PSW_BITS;
task_regs(child)->gr[0] |= data;
ret = 0;
goto out_tsk;
}
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
if (addr & (sizeof(int)-1))
goto out_tsk;
if ((addr = translate_usr_offset(addr)) < 0)
goto out_tsk;
DBG("sys_ptrace(POKEUSR, %d, %lx, %lx) addr %lx\n",
pid, oaddr, odata, addr);
ret = arch_ptrace(child, request, addr, data);
} else {
if (addr & (sizeof(compat_uint_t)-1))
break;
addr = translate_usr_offset(addr);
if (addr < 0)
break;
if (addr >= PT_FR0 && addr <= PT_FR31 + 4) {
/* Special case, fp regs are 64 bits anyway */
*(unsigned int *) ((char *) task_regs(child) + addr) = data;
*(__u64 *) ((char *) task_regs(child) + addr) = data;
ret = 0;
}
else if ((addr >= PT_GR1+4 && addr <= PT_GR31+4) ||
addr == PT_IAOQ0+4 || addr == PT_IAOQ1+4 ||
addr == PT_SAR+4) {
/* Zero the top 32 bits */
*(unsigned int *) ((char *) task_regs(child) + addr - 4) = 0;
*(unsigned int *) ((char *) task_regs(child) + addr) = data;
ret = 0;
}
goto out_tsk;
}
else
#endif
{
if ((addr & (sizeof(long)-1)) || (unsigned long) addr >= sizeof(struct pt_regs))
goto out_tsk;
if ((addr >= PT_GR1 && addr <= PT_GR31) ||
addr == PT_IAOQ0 || addr == PT_IAOQ1 ||
(addr >= PT_FR0 && addr <= PT_FR31 + 4) ||
addr == PT_SAR) {
*(unsigned long *) ((char *) task_regs(child) + addr) = data;
*(__u32 *) ((char *) task_regs(child) + addr - 4) = 0;
*(__u32 *) ((char *) task_regs(child) + addr) = data;
ret = 0;
}
goto out_tsk;
}
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT:
ret = -EIO;
DBG("sys_ptrace(%s)\n",
request == PTRACE_SYSCALL ? "SYSCALL" : "CONT");
if (!valid_signal(data))
goto out_tsk;
child->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP);
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
} else {
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
}
child->exit_code = data;
goto out_wake_notrap;
case PTRACE_KILL:
/*
* make the child exit. Best I can do is send it a
* sigkill. perhaps it should be put in the status
* that it wants to exit.
*/
ret = 0;
DBG("sys_ptrace(KILL)\n");
if (child->exit_state == EXIT_ZOMBIE) /* already dead */
goto out_tsk;
child->exit_code = SIGKILL;
goto out_wake_notrap;
case PTRACE_SINGLEBLOCK:
DBG("sys_ptrace(SINGLEBLOCK)\n");
ret = -EIO;
if (!valid_signal(data))
goto out_tsk;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->ptrace &= ~PT_SINGLESTEP;
child->ptrace |= PT_BLOCKSTEP;
child->exit_code = data;
/* Enable taken branch trap. */
pa_psw(child)->r = 0;
pa_psw(child)->t = 1;
pa_psw(child)->h = 0;
pa_psw(child)->l = 0;
goto out_wake;
case PTRACE_SINGLESTEP:
DBG("sys_ptrace(SINGLESTEP)\n");
ret = -EIO;
if (!valid_signal(data))
goto out_tsk;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->ptrace &= ~PT_BLOCKSTEP;
child->ptrace |= PT_SINGLESTEP;
child->exit_code = data;
if (pa_psw(child)->n) {
struct siginfo si;
/* Nullified, just crank over the queue. */
task_regs(child)->iaoq[0] = task_regs(child)->iaoq[1];
task_regs(child)->iasq[0] = task_regs(child)->iasq[1];
task_regs(child)->iaoq[1] = task_regs(child)->iaoq[0] + 4;
pa_psw(child)->n = 0;
pa_psw(child)->x = 0;
pa_psw(child)->y = 0;
pa_psw(child)->z = 0;
pa_psw(child)->b = 0;
ptrace_disable(child);
/* Don't wake up the child, but let the
parent know something happened. */
si.si_code = TRAP_TRACE;
si.si_addr = (void __user *) (task_regs(child)->iaoq[0] & ~3);
si.si_signo = SIGTRAP;
si.si_errno = 0;
force_sig_info(SIGTRAP, &si, child);
//notify_parent(child, SIGCHLD);
//ret = 0;
goto out_wake;
}
/* Enable recovery counter traps. The recovery counter
* itself will be set to zero on a task switch. If the
* task is suspended on a syscall then the syscall return
* path will overwrite the recovery counter with a suitable
* value such that it traps once back in user space. We
* disable interrupts in the childs PSW here also, to avoid
* interrupts while the recovery counter is decrementing.
*/
pa_psw(child)->r = 1;
pa_psw(child)->t = 0;
pa_psw(child)->h = 0;
pa_psw(child)->l = 0;
/* give it a chance to run. */
goto out_wake;
case PTRACE_GETEVENTMSG:
ret = put_user(child->ptrace_message, (unsigned int __user *) data);
goto out_tsk;
break;
default:
ret = ptrace_request(child, request, addr, data);
goto out_tsk;
ret = compat_ptrace_request(child, request, addr, data);
break;
}
out_wake_notrap:
ptrace_disable(child);
out_wake:
wake_up_process(child);
ret = 0;
out_tsk:
DBG("arch_ptrace(%ld, %d, %lx, %lx) returning %ld\n",
request, pid, oaddr, odata, ret);
return ret;
}
#endif
void syscall_trace(void)
{
......
......@@ -8,12 +8,24 @@
*
*/
#include <asm/pdc.h>
#include <asm/psw.h>
#include <asm/assembly.h>
#include <asm/asm-offsets.h>
#include <linux/linkage.h>
.section .bss
.export pdc_result
.export pdc_result2
.align 8
pdc_result:
.block ASM_PDC_RESULT_SIZE
pdc_result2:
.block ASM_PDC_RESULT_SIZE
.export real_stack
.export real32_stack
.export real64_stack
......
......@@ -44,6 +44,7 @@
#include <asm/pdc_chassis.h>
#include <asm/io.h>
#include <asm/setup.h>
#include <asm/unwind.h>
static char __initdata command_line[COMMAND_LINE_SIZE];
......@@ -123,6 +124,7 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_64BIT
extern int parisc_narrow_firmware;
#endif
unwind_init();
init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
......@@ -368,6 +370,31 @@ static int __init parisc_init(void)
return 0;
}
arch_initcall(parisc_init);
void start_parisc(void)
{
extern void start_kernel(void);
int ret, cpunum;
struct pdc_coproc_cfg coproc_cfg;
cpunum = smp_processor_id();
set_firmware_width_unlocked();
ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
if (ret >= 0 && coproc_cfg.ccr_functional) {
mtctl(coproc_cfg.ccr_functional, 10);
cpu_data[cpunum].fp_rev = coproc_cfg.revision;
cpu_data[cpunum].fp_model = coproc_cfg.model;
asm volatile ("fstd %fr0,8(%sp)");
} else {
panic("must have an fpu to boot linux");
}
start_kernel();
// not reached
}
......@@ -87,7 +87,7 @@
ENTRY_SAME(setuid)
ENTRY_SAME(getuid)
ENTRY_COMP(stime) /* 25 */
ENTRY_SAME(ptrace)
ENTRY_COMP(ptrace)
ENTRY_SAME(alarm)
/* see stat comment */
ENTRY_COMP(newfstat)
......@@ -407,6 +407,12 @@
ENTRY_SAME(timerfd_create)
ENTRY_COMP(timerfd_settime)
ENTRY_COMP(timerfd_gettime)
ENTRY_COMP(signalfd4)
ENTRY_SAME(eventfd2) /* 310 */
ENTRY_SAME(epoll_create1)
ENTRY_SAME(dup3)
ENTRY_SAME(pipe2)
ENTRY_SAME(inotify_init1)
/* Nothing yet */
......
......@@ -23,6 +23,7 @@
#include <linux/smp.h>
#include <linux/profile.h>
#include <linux/clocksource.h>
#include <linux/platform_device.h>
#include <asm/uaccess.h>
#include <asm/io.h>
......@@ -215,6 +216,24 @@ void __init start_cpu_itimer(void)
cpu_data[cpu].it_value = next_tick;
}
struct platform_device rtc_parisc_dev = {
.name = "rtc-parisc",
.id = -1,
};
static int __init rtc_init(void)
{
int ret;
ret = platform_device_register(&rtc_parisc_dev);
if (ret < 0)
printk(KERN_ERR "unable to register rtc device...\n");
/* not necessarily an error */
return 0;
}
module_init(rtc_init);
void __init time_init(void)
{
static struct pdc_tod tod_data;
......@@ -245,4 +264,3 @@ void __init time_init(void)
xtime.tv_nsec = 0;
}
}
......@@ -170,7 +170,7 @@ void unwind_table_remove(struct unwind_table *table)
}
/* Called from setup_arch to import the kernel unwind info */
static int unwind_init(void)
int unwind_init(void)
{
long start, stop;
register unsigned long gp __asm__ ("r27");
......@@ -417,5 +417,3 @@ int unwind_to_user(struct unwind_frame_info *info)
return ret;
}
module_init(unwind_init);
......@@ -20,8 +20,8 @@
#include <linux/agp_backend.h>
#include <linux/log2.h>
#include <asm-parisc/parisc-device.h>
#include <asm-parisc/ropes.h>
#include <asm/parisc-device.h>
#include <asm/ropes.h>
#include "agp.h"
......
......@@ -66,15 +66,8 @@
#undef DEBUG_CCIO_RUN_SG
#ifdef CONFIG_PROC_FS
/*
* CCIO_SEARCH_TIME can help measure how fast the bitmap search is.
* impacts performance though - ditch it if you don't use it.
*/
#define CCIO_SEARCH_TIME
#undef CCIO_MAP_STATS
#else
#undef CCIO_SEARCH_TIME
#undef CCIO_MAP_STATS
/* depends on proc fs support. But costs CPU performance. */
#undef CCIO_COLLECT_STATS
#endif
#include <linux/proc_fs.h>
......@@ -239,12 +232,10 @@ struct ioc {
u32 res_size; /* size of resource map in bytes */
spinlock_t res_lock;
#ifdef CCIO_SEARCH_TIME
#ifdef CCIO_COLLECT_STATS
#define CCIO_SEARCH_SAMPLE 0x100
unsigned long avg_search[CCIO_SEARCH_SAMPLE];
unsigned long avg_idx; /* current index into avg_search */
#endif
#ifdef CCIO_MAP_STATS
unsigned long used_pages;
unsigned long msingle_calls;
unsigned long msingle_pages;
......@@ -351,7 +342,7 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
unsigned int pages_needed = size >> IOVP_SHIFT;
unsigned int res_idx;
unsigned long boundary_size;
#ifdef CCIO_SEARCH_TIME
#ifdef CCIO_COLLECT_STATS
unsigned long cr_start = mfctl(16);
#endif
......@@ -406,7 +397,7 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
DBG_RES("%s() res_idx %d res_hint: %d\n",
__func__, res_idx, ioc->res_hint);
#ifdef CCIO_SEARCH_TIME
#ifdef CCIO_COLLECT_STATS
{
unsigned long cr_end = mfctl(16);
unsigned long tmp = cr_end - cr_start;
......@@ -416,7 +407,7 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
ioc->avg_search[ioc->avg_idx++] = cr_start;
ioc->avg_idx &= CCIO_SEARCH_SAMPLE - 1;
#endif
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
ioc->used_pages += pages_needed;
#endif
/*
......@@ -452,7 +443,7 @@ ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)
DBG_RES("%s(): res_idx: %d pages_mapped %d\n",
__func__, res_idx, pages_mapped);
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
ioc->used_pages -= pages_mapped;
#endif
......@@ -764,7 +755,7 @@ ccio_map_single(struct device *dev, void *addr, size_t size,
size = ALIGN(size + offset, IOVP_SIZE);
spin_lock_irqsave(&ioc->res_lock, flags);
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
ioc->msingle_calls++;
ioc->msingle_pages += size >> IOVP_SHIFT;
#endif
......@@ -828,7 +819,7 @@ ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size,
spin_lock_irqsave(&ioc->res_lock, flags);
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
ioc->usingle_calls++;
ioc->usingle_pages += size >> IOVP_SHIFT;
#endif
......@@ -894,7 +885,7 @@ ccio_free_consistent(struct device *dev, size_t size, void *cpu_addr,
*/
#define PIDE_FLAG 0x80000000UL
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
#define IOMMU_MAP_STATS
#endif
#include "iommu-helpers.h"
......@@ -938,7 +929,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
spin_lock_irqsave(&ioc->res_lock, flags);
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
ioc->msg_calls++;
#endif
......@@ -997,13 +988,13 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
DBG_RUN_SG("%s() START %d entries, %08lx,%x\n",
__func__, nents, sg_virt_addr(sglist), sglist->length);
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
ioc->usg_calls++;
#endif
while(sg_dma_len(sglist) && nents--) {
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
ioc->usg_pages += sg_dma_len(sglist) >> PAGE_SHIFT;
#endif
ccio_unmap_single(dev, sg_dma_address(sglist),
......@@ -1048,7 +1039,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
len += seq_printf(m, "IO PDIR size : %d bytes (%d entries)\n",
total_pages * 8, total_pages);
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
len += seq_printf(m, "IO PDIR entries : %ld free %ld used (%d%%)\n",
total_pages - ioc->used_pages, ioc->used_pages,
(int)(ioc->used_pages * 100 / total_pages));
......@@ -1057,7 +1048,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
len += seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n",
ioc->res_size, total_pages);
#ifdef CCIO_SEARCH_TIME
#ifdef CCIO_COLLECT_STATS
min = max = ioc->avg_search[0];
for(j = 0; j < CCIO_SEARCH_SAMPLE; ++j) {
avg += ioc->avg_search[j];
......@@ -1070,7 +1061,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
len += seq_printf(m, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
min, avg, max);
#endif
#ifdef CCIO_MAP_STATS
#ifdef CCIO_COLLECT_STATS
len += seq_printf(m, "pci_map_single(): %8ld calls %8ld pages (avg %d/1000)\n",
ioc->msingle_calls, ioc->msingle_pages,
(int)((ioc->msingle_pages * 1000)/ioc->msingle_calls));
......@@ -1088,7 +1079,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
len += seq_printf(m, "pci_unmap_sg() : %8ld calls %8ld pages (avg %d/1000)\n\n\n",
ioc->usg_calls, ioc->usg_pages,
(int)((ioc->usg_pages * 1000)/ioc->usg_calls));
#endif /* CCIO_MAP_STATS */
#endif /* CCIO_COLLECT_STATS */
ioc = ioc->next;
}
......
......@@ -610,6 +610,14 @@ config RTC_DRV_RS5C313
help
If you say yes here you get support for the Ricoh RS5C313 RTC chips.
config RTC_DRV_PARISC
tristate "PA-RISC firmware RTC support"
depends on PARISC
help
Say Y or M here to enable RTC support on PA-RISC systems using
firmware calls. If you do not know what you are doing, you should
just say Y.
config RTC_DRV_PPC
tristate "PowerPC machine dependent RTC support"
depends on PPC
......
......@@ -51,6 +51,7 @@ obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o
obj-$(CONFIG_RTC_DRV_PCF8583) += rtc-pcf8583.o
obj-$(CONFIG_RTC_DRV_PL030) += rtc-pl030.o
obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o
obj-$(CONFIG_RTC_DRV_PARISC) += rtc-parisc.o
obj-$(CONFIG_RTC_DRV_PPC) += rtc-ppc.o
obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701.o
obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o
......
/* rtc-parisc: RTC for HP PA-RISC firmware
*
* Copyright (C) 2008 Kyle McMartin <kyle@mcmartin.ca>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/time.h>
#include <linux/platform_device.h>
#include <asm/rtc.h>
/* as simple as can be, and no simpler. */
struct parisc_rtc {
struct rtc_device *rtc;
spinlock_t lock;
};
static int parisc_get_time(struct device *dev, struct rtc_time *tm)
{
struct parisc_rtc *p = dev_get_drvdata(dev);
unsigned long flags, ret;
spin_lock_irqsave(&p->lock, flags);
ret = get_rtc_time(tm);
spin_unlock_irqrestore(&p->lock, flags);
if (ret & RTC_BATT_BAD)
return -EOPNOTSUPP;
return 0;
}
static int parisc_set_time(struct device *dev, struct rtc_time *tm)
{
struct parisc_rtc *p = dev_get_drvdata(dev);
unsigned long flags, ret;
spin_lock_irqsave(&p->lock, flags);
ret = set_rtc_time(tm);
spin_unlock_irqrestore(&p->lock, flags);
if (ret < 0)
return -EOPNOTSUPP;
return 0;
}
static const struct rtc_class_ops parisc_rtc_ops = {
.read_time = parisc_get_time,
.set_time = parisc_set_time,
};
static int __devinit parisc_rtc_probe(struct platform_device *dev)
{
struct parisc_rtc *p;
p = kzalloc(sizeof (*p), GFP_KERNEL);
if (!p)
return -ENOMEM;
spin_lock_init(&p->lock);
p->rtc = rtc_device_register("rtc-parisc", &dev->dev, &parisc_rtc_ops,
THIS_MODULE);
if (IS_ERR(p->rtc)) {
int err = PTR_ERR(p->rtc);
kfree(p);
return err;
}
platform_set_drvdata(dev, p);
return 0;
}
static int __devexit parisc_rtc_remove(struct platform_device *dev)
{
struct parisc_rtc *p = platform_get_drvdata(dev);
rtc_device_unregister(p->rtc);
kfree(p);
return 0;
}
static struct platform_driver parisc_rtc_driver = {
.driver = {
.name = "rtc-parisc",
.owner = THIS_MODULE,
},
.probe = parisc_rtc_probe,
.remove = __devexit_p(parisc_rtc_remove),
};
static int __init parisc_rtc_init(void)
{
return platform_driver_register(&parisc_rtc_driver);
}
static void __exit parisc_rtc_fini(void)
{
platform_driver_unregister(&parisc_rtc_driver);
}
module_init(parisc_rtc_init);
module_exit(parisc_rtc_fini);
MODULE_AUTHOR("Kyle McMartin <kyle@mcmartin.ca>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("HP PA-RISC RTC driver");
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