Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge
authorLinus Torvalds <torvalds@g5.osdl.org>
Thu, 9 Mar 2006 02:11:00 +0000 (18:11 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Thu, 9 Mar 2006 02:11:00 +0000 (18:11 -0800)
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge:
  powerpc: Fix various syscall/signal/swapcontext bugs
  [PATCH] powerpc: incorrect rmo_top handling in prom_init
  [PATCH] powerpc: Fix incorrect pud_ERROR() message
  [PATCH] powerpc: Expose SMT and L1 icache snoop userland features
  [PATCH] powerpc: Fix windfarm_pm112 not starting all control loops
  [PATCH] powerpc: Fix old g5 issues with windfarm
  powerpc32: Fix timebase synchronization on 32-bit powermacs
  powerpc: Turn off verbose debug output in powermac platform functions
  powerpc: Fix might-sleep warning in program check exception handler

23 files changed:
arch/powerpc/kernel/asm-offsets.c
arch/powerpc/kernel/cputable.c
arch/powerpc/kernel/entry_32.S
arch/powerpc/kernel/entry_64.S
arch/powerpc/kernel/prom_init.c
arch/powerpc/kernel/ptrace.c
arch/powerpc/kernel/signal_32.c
arch/powerpc/kernel/signal_64.c
arch/powerpc/kernel/systbl.S
arch/powerpc/kernel/traps.c
arch/powerpc/platforms/powermac/pfunc_base.c
arch/powerpc/platforms/powermac/pfunc_core.c
arch/powerpc/platforms/powermac/smp.c
arch/ppc/kernel/asm-offsets.c
arch/ppc/kernel/entry.S
drivers/macintosh/windfarm_core.c
drivers/macintosh/windfarm_cpufreq_clamp.c
drivers/macintosh/windfarm_lm75_sensor.c
drivers/macintosh/windfarm_max6690_sensor.c
drivers/macintosh/windfarm_pm112.c
include/asm-powerpc/cputable.h
include/asm-powerpc/pgtable-4k.h
include/asm-powerpc/thread_info.h

index 840aad43a98bd218f5c985214e483b5578d6b763..c9a660e4c2db24d4dd03c46b9ecf0065e405e027 100644 (file)
@@ -92,7 +92,6 @@ int main(void)
 
        DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
        DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
-       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));
index 10696456a4c616d0d3900ec0b6370b9a2cb41402..e4e81374cb9a48011191a85cc75995430e64817f 100644 (file)
@@ -53,8 +53,10 @@ extern void __setup_cpu_ppc970(unsigned long offset, struct cpu_spec* spec);
                                 PPC_FEATURE_HAS_MMU)
 #define COMMON_USER_PPC64      (COMMON_USER | PPC_FEATURE_64)
 #define COMMON_USER_POWER4     (COMMON_USER_PPC64 | PPC_FEATURE_POWER4)
-#define COMMON_USER_POWER5     (COMMON_USER_PPC64 | PPC_FEATURE_POWER5)
-#define COMMON_USER_POWER5_PLUS        (COMMON_USER_PPC64 | PPC_FEATURE_POWER5_PLUS)
+#define COMMON_USER_POWER5     (COMMON_USER_PPC64 | PPC_FEATURE_POWER5 |\
+                                PPC_FEATURE_SMT | PPC_FEATURE_ICACHE_SNOOP)
+#define COMMON_USER_POWER5_PLUS        (COMMON_USER_PPC64 | PPC_FEATURE_POWER5_PLUS|\
+                                PPC_FEATURE_SMT | PPC_FEATURE_ICACHE_SNOOP)
 #define COMMON_USER_BOOKE      (PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \
                                 PPC_FEATURE_BOOKE)
 
@@ -267,7 +269,8 @@ struct cpu_spec     cpu_specs[] = {
                .cpu_name               = "Cell Broadband Engine",
                .cpu_features           = CPU_FTRS_CELL,
                .cpu_user_features      = COMMON_USER_PPC64 |
-                       PPC_FEATURE_CELL | PPC_FEATURE_HAS_ALTIVEC_COMP,
+                       PPC_FEATURE_CELL | PPC_FEATURE_HAS_ALTIVEC_COMP |
+                       PPC_FEATURE_SMT,
                .icache_bsize           = 128,
                .dcache_bsize           = 128,
                .cpu_setup              = __setup_cpu_be,
index f20a67261ec730b2c98ef5f0756eaa6301a38bfd..4827ca1ec89b74dfc782b47d921e30172a76200a 100644 (file)
@@ -227,7 +227,7 @@ ret_from_syscall:
        MTMSRD(r10)
        lwz     r9,TI_FLAGS(r12)
        li      r8,-_LAST_ERRNO
-       andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_RESTOREALL|_TIF_RESTORE_SIGMASK)
+       andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)
        bne-    syscall_exit_work
        cmplw   0,r3,r8
        blt+    syscall_exit_cont
@@ -287,8 +287,10 @@ syscall_dotrace:
 
 syscall_exit_work:
        andi.   r0,r9,_TIF_RESTOREALL
-       bne-    2f
-       cmplw   0,r3,r8
+       beq+    0f
+       REST_NVGPRS(r1)
+       b       2f
+0:     cmplw   0,r3,r8
        blt+    1f
        andi.   r0,r9,_TIF_NOERROR
        bne-    1f
@@ -302,9 +304,7 @@ syscall_exit_work:
 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.  */
+       /* Clear per-syscall TIF flags if any are set.  */
 
        li      r11,_TIF_PERSYSCALL_MASK
        addi    r12,r12,TI_FLAGS
@@ -318,8 +318,13 @@ syscall_exit_work:
        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
+       andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
+       beq     ret_from_except
+
+       /* Re-enable interrupts */
+       ori     r10,r10,MSR_EE
+       SYNC
+       MTMSRD(r10)
 
        /* Save NVGPRS if they're not saved already */
        lwz     r4,_TRAP(r1)
@@ -328,71 +333,11 @@ syscall_exit_work:
        SAVE_NVGPRS(r1)
        li      r4,0xc00
        stw     r4,_TRAP(r1)
-
-       /* 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
-
+5:
        addi    r3,r1,STACK_FRAME_OVERHEAD
        bl      do_syscall_trace_leave
-       REST_NVGPRS(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)
-7:
-       andi.   r0,r9,_TIF_NEED_RESCHED
-       bne     8f
-       lwz     r5,_MSR(r1)
-       andi.   r5,r5,MSR_PR
-       beq     ret_from_except
-       andi.   r0,r9,_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK
-       beq     ret_from_except
-       b       do_user_signal
-8:
-       ori     r10,r10,MSR_EE
-       SYNC
-       MTMSRD(r10)             /* re-enable interrupts */
-       bl      schedule
-       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
+       b       ret_from_except_full
 
-       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
@@ -490,6 +435,14 @@ 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
@@ -683,7 +636,7 @@ 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|_TIF_RESTOREALL|_TIF_RESTORE_SIGMASK)
+       andi.   r0,r9,(_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK|_TIF_NEED_RESCHED)
        bne     do_work
 
 restore_user:
index 388f861b8ed17dfe1e8a0d0496955e35e2254050..24be0cf86d7f75635de6cd81047f06ca832e5c6c 100644 (file)
@@ -160,7 +160,7 @@ syscall_exit:
        mtmsrd  r10,1
        ld      r9,TI_FLAGS(r12)
        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|_TIF_RESTORE_SIGMASK)
+       andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)
        bne-    syscall_exit_work
        cmpld   r3,r11
        ld      r5,_CCR(r1)
@@ -216,8 +216,10 @@ syscall_exit_work:
         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 */
+       beq+    0f
+       REST_NVGPRS(r1)
+       b       2f
+0:     cmpld   r3,r11          /* r10 is -LAST_ERRNO */
        blt+    1f
        andi.   r0,r9,_TIF_NOERROR
        bne-    1f
@@ -229,9 +231,7 @@ syscall_exit_work:
 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.  */
+       /* Clear per-syscall TIF flags if any are set.  */
 
        li      r11,_TIF_PERSYSCALL_MASK
        addi    r12,r12,TI_FLAGS
@@ -240,10 +240,9 @@ syscall_exit_work:
        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)
+
+4:     /* Anything else left to do? */
+       andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
        beq     .ret_from_except_lite
 
        /* Re-enable interrupts */
@@ -251,26 +250,10 @@ syscall_exit_work:
        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
-       
+       bl      .save_nvgprs
        addi    r3,r1,STACK_FRAME_OVERHEAD
        bl      .do_syscall_trace_leave
-       REST_NVGPRS(r1)
-       clrrdi  r12,r1,THREAD_SHIFT
-
-       /* 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
+       b       .ret_from_except
 
 /* Save non-volatile GPRs, if not already saved. */
 _GLOBAL(save_nvgprs)
@@ -282,51 +265,6 @@ _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
@@ -352,6 +290,16 @@ _GLOBAL(ppc_clone)
        bl      .sys_clone
        b       syscall_exit
 
+_GLOBAL(ppc32_swapcontext)
+       bl      .save_nvgprs
+       bl      .compat_sys_swapcontext
+       b       syscall_exit
+
+_GLOBAL(ppc64_swapcontext)
+       bl      .save_nvgprs
+       bl      .sys_swapcontext
+       b       syscall_exit
+
 _GLOBAL(ret_from_fork)
        bl      .schedule_tail
        REST_NVGPRS(r1)
index d34fe537400e657996521a7cba0025c3febc7bfa..813c2cd194c218dd0d2803c402b9a2e9281b887f 100644 (file)
@@ -978,7 +978,7 @@ static void __init prom_init_mem(void)
                        if (size == 0)
                                continue;
                        prom_debug("    %x %x\n", base, size);
-                       if (base == 0)
+                       if (base == 0 && (RELOC(of_platform) & PLATFORM_LPAR))
                                RELOC(rmo_top) = size;
                        if ((base + size) > RELOC(ram_top))
                                RELOC(ram_top) = base + size;
index 400793c7130466bc535f02fff0acc32db9b833c2..bcb83574335b0e80821bae2e6f78349f90ed7da4 100644 (file)
@@ -561,10 +561,7 @@ void do_syscall_trace_leave(struct pt_regs *regs)
                                   regs->result);
 
        if ((test_thread_flag(TIF_SYSCALL_TRACE)
-#ifdef CONFIG_PPC64
-            || test_thread_flag(TIF_SINGLESTEP)
-#endif
-            )
+            || test_thread_flag(TIF_SINGLESTEP))
            && (current->ptrace & PT_PTRACED))
                do_syscall_trace();
 }
index bd837b5dbf06cd5992ca4129bead41135f13b040..d7a4e814974d8a2e5e5a970b87971592a1ee4094 100644 (file)
@@ -151,10 +151,7 @@ static inline int save_general_regs(struct pt_regs *regs,
        elf_greg_t64 *gregs = (elf_greg_t64 *)regs;
        int i;
 
-       if (!FULL_REGS(regs)) {
-               set_thread_flag(TIF_SAVE_NVGPRS);
-               current_thread_info()->nvgprs_frame = frame->mc_gregs;
-       }
+       WARN_ON(!FULL_REGS(regs));
 
        for (i = 0; i <= PT_RESULT; i ++) {
                if (i == 14 && !FULL_REGS(regs))
@@ -215,15 +212,7 @@ static inline int get_old_sigaction(struct k_sigaction *new_ka,
 static inline int save_general_regs(struct pt_regs *regs,
                struct mcontext __user *frame)
 {
-       if (!FULL_REGS(regs)) {
-               /* Zero out the unsaved GPRs to avoid information
-                  leak, and set TIF_SAVE_NVGPRS to ensure that the
-                  registers do actually get saved later. */
-               memset(&regs->gpr[14], 0, 18 * sizeof(unsigned long));
-               current_thread_info()->nvgprs_frame = &frame->mc_gregs;
-               set_thread_flag(TIF_SAVE_NVGPRS);
-       }
-
+       WARN_ON(!FULL_REGS(regs));
        return __copy_to_user(&frame->mc_gregs, regs, GP_REGS_SIZE);
 }
 
@@ -826,8 +815,8 @@ static int do_setcontext(struct ucontext __user *ucp, struct pt_regs *regs, int
 }
 
 long sys_swapcontext(struct ucontext __user *old_ctx,
-                      struct ucontext __user *new_ctx,
-                      int ctx_size, int r6, int r7, int r8, struct pt_regs *regs)
+                    struct ucontext __user *new_ctx,
+                    int ctx_size, int r6, int r7, int r8, struct pt_regs *regs)
 {
        unsigned char tmp;
 
index 497a5d3df359e5911b61110632b79ee540ff3095..4324f8a8ba247cf4e24f765d44d0217b28c175d4 100644 (file)
@@ -118,14 +118,7 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
        err |= __put_user(0, &sc->v_regs);
 #endif /* CONFIG_ALTIVEC */
        err |= __put_user(&sc->gp_regs, &sc->regs);
-       if (!FULL_REGS(regs)) {
-               /* Zero out the unsaved GPRs to avoid information
-                  leak, and set TIF_SAVE_NVGPRS to ensure that the
-                  registers do actually get saved later. */
-               memset(&regs->gpr[14], 0, 18 * sizeof(unsigned long));
-               set_thread_flag(TIF_SAVE_NVGPRS);
-               current_thread_info()->nvgprs_frame = &sc->gp_regs;
-       }
+       WARN_ON(!FULL_REGS(regs));
        err |= __copy_to_user(&sc->gp_regs, regs, GP_REGS_SIZE);
        err |= __copy_to_user(&sc->fp_regs, &current->thread.fpr, FP_REGS_SIZE);
        err |= __put_user(signr, &sc->signal);
index 8a9f994ed9170ec6e0a934db1c7671771ad5019e..1ad55f0466fd621b58f5271bceebb01ea07c4624 100644 (file)
@@ -288,7 +288,7 @@ COMPAT_SYS(clock_settime)
 COMPAT_SYS(clock_gettime)
 COMPAT_SYS(clock_getres)
 COMPAT_SYS(clock_nanosleep)
-COMPAT_SYS(swapcontext)
+SYSX(ppc64_swapcontext,ppc32_swapcontext,ppc_swapcontext)
 COMPAT_SYS(tgkill)
 COMPAT_SYS(utimes)
 COMPAT_SYS(statfs64)
index 7509aa6474f2e7c03deb7fa896b658fd31f6247f..98660aedeeb77234865edaf7075fea0ca29da9df 100644 (file)
@@ -814,6 +814,8 @@ void __kprobes program_check_exception(struct pt_regs *regs)
                return;
        }
 
+       local_irq_enable();
+
        /* Try to emulate it if we should. */
        if (reason & (REASON_ILLEGAL | REASON_PRIVILEGED)) {
                switch (emulate_instruction(regs)) {
index 4ffd2a9832a0c9fba43974b1f0fa00227372599f..9b7150f104147f7de2bdce33da432321bd936c01 100644 (file)
@@ -9,7 +9,12 @@
 #include <asm/pmac_feature.h>
 #include <asm/pmac_pfunc.h>
 
+#undef DEBUG
+#ifdef DEBUG
 #define DBG(fmt...)    printk(fmt)
+#else
+#define DBG(fmt...)
+#endif
 
 static irqreturn_t macio_gpio_irq(int irq, void *data, struct pt_regs *regs)
 {
index 356a739e52b2d9c446b0c720c50f1d843faf90c5..4baa75b1d36ff60a7cb9088a7e6ffa5d10301e0f 100644 (file)
 #define LOG_PARSE(fmt...)
 #define LOG_ERROR(fmt...)      printk(fmt)
 #define LOG_BLOB(t,b,c)
+
+#undef DEBUG
+#ifdef DEBUG
 #define DBG(fmt...)            printk(fmt)
+#else
+#define DBG(fmt...)
+#endif
 
 /* Command numbers */
 #define PMF_CMD_LIST                   0
index 0df2cdcd805c1776ecd85b2de340bf3db0742390..6d64a9bf3474db8a29decd772667aafd6f03a8ea 100644 (file)
@@ -435,7 +435,7 @@ struct smp_ops_t psurge_smp_ops = {
  */
 
 static void (*pmac_tb_freeze)(int freeze);
-static unsigned long timebase;
+static u64 timebase;
 static int tb_req;
 
 static void smp_core99_give_timebase(void)
index 7964bf660e9274b9abb460d548a5c368db591809..77e4dc780f8cfa3efae51e0f1a088a1c9123bcfc 100644 (file)
@@ -131,7 +131,6 @@ main(void)
        DEFINE(CPU_SPEC_FEATURES, offsetof(struct cpu_spec, cpu_features));
        DEFINE(CPU_SPEC_SETUP, offsetof(struct cpu_spec, cpu_setup));
 
-       DEFINE(TI_SIGFRAME, offsetof(struct thread_info, nvgprs_frame));
        DEFINE(TI_TASK, offsetof(struct thread_info, task));
        DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
        DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
index a48b950722a11385059b6606057b1d34f20ca3fc..3a28159784883df5b54a4de11538aa922ea7cf87 100644 (file)
@@ -227,7 +227,7 @@ ret_from_syscall:
        MTMSRD(r10)
        lwz     r9,TI_FLAGS(r12)
        li      r8,-_LAST_ERRNO
-       andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_RESTOREALL)
+       andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)
        bne-    syscall_exit_work
        cmplw   0,r3,r8
        blt+    syscall_exit_cont
@@ -287,8 +287,10 @@ syscall_dotrace:
 
 syscall_exit_work:
        andi.   r0,r9,_TIF_RESTOREALL
-       bne-    2f
-       cmplw   0,r3,r8
+       beq+    0f
+       REST_NVGPRS(r1)
+       b       2f
+0:     cmplw   0,r3,r8
        blt+    1f
        andi.   r0,r9,_TIF_NOERROR
        bne-    1f
@@ -302,9 +304,7 @@ syscall_exit_work:
 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.  */
+       /* Clear per-syscall TIF flags if any are set.  */
 
        li      r11,_TIF_PERSYSCALL_MASK
        addi    r12,r12,TI_FLAGS
@@ -318,8 +318,13 @@ syscall_exit_work:
        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
+       andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
+       beq     ret_from_except
+
+       /* Re-enable interrupts */
+       ori     r10,r10,MSR_EE
+       SYNC
+       MTMSRD(r10)
 
        /* Save NVGPRS if they're not saved already */
        lwz     r4,TRAP(r1)
@@ -328,71 +333,11 @@ syscall_exit_work:
        SAVE_NVGPRS(r1)
        li      r4,0xc00
        stw     r4,TRAP(r1)
-
-       /* 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
-
+5:
        addi    r3,r1,STACK_FRAME_OVERHEAD
        bl      do_syscall_trace_leave
-       REST_NVGPRS(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,r1,0,0,18   /* current_thread_info() */
-       lwz     r9,TI_FLAGS(r12)
-7:
-       andi.   r0,r9,_TIF_NEED_RESCHED
-       bne     8f
-       lwz     r5,_MSR(r1)
-       andi.   r5,r5,MSR_PR
-       beq     ret_from_except
-       andi.   r0,r9,_TIF_SIGPENDING
-       beq     ret_from_except
-       b       do_user_signal
-8:
-       ori     r10,r10,MSR_EE
-       SYNC
-       MTMSRD(r10)             /* re-enable interrupts */
-       bl      schedule
-       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
+       b       ret_from_except_full
 
-       rlwinm  r12,r1,0,0,18   /* current_thread_info() */
-       lwz     r9,TI_FLAGS(r12)
-       b       save_user_nvgprs_cont
-       
 #ifdef SHOW_SYSCALLS
 do_show_syscall:
 #ifdef SHOW_SYSCALLS_TASK
@@ -490,6 +435,14 @@ 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
@@ -683,7 +636,7 @@ user_exc_return:            /* r10 contains MSR_KERNEL here */
        /* Check current_thread_info()->flags */
        rlwinm  r9,r1,0,0,18
        lwz     r9,TI_FLAGS(r9)
-       andi.   r0,r9,(_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_RESTOREALL)
+       andi.   r0,r9,(_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK|_TIF_NEED_RESCHED)
        bne     do_work
 
 restore_user:
index bb8d5efe19bfc456e3825459c63ff746a4215963..6c0ba04bc57a299caf6868d509fc5aa7ecb55cfa 100644 (file)
@@ -35,6 +35,8 @@
 #include <linux/platform_device.h>
 #include <linux/mutex.h>
 
+#include <asm/prom.h>
+
 #include "windfarm.h"
 
 #define VERSION "0.2"
@@ -465,6 +467,11 @@ static int __init windfarm_core_init(void)
 {
        DBG("wf: core loaded\n");
 
+       /* Don't register on old machines that use therm_pm72 for now */
+       if (machine_is_compatible("PowerMac7,2") ||
+           machine_is_compatible("PowerMac7,3") ||
+           machine_is_compatible("RackMac3,1"))
+               return -ENODEV;
        platform_device_register(&wf_platform_device);
        return 0;
 }
index 607dbaca69c96fbb2172556bc4a14e5ca72f93d6..81337cd16e80d1fc80f87ee17fb82aa88a03d00f 100644 (file)
@@ -8,6 +8,8 @@
 #include <linux/wait.h>
 #include <linux/cpufreq.h>
 
+#include <asm/prom.h>
+
 #include "windfarm.h"
 
 #define VERSION "0.3"
@@ -74,6 +76,12 @@ static int __init wf_cpufreq_clamp_init(void)
 {
        struct wf_control *clamp;
 
+       /* Don't register on old machines that use therm_pm72 for now */
+       if (machine_is_compatible("PowerMac7,2") ||
+           machine_is_compatible("PowerMac7,3") ||
+           machine_is_compatible("RackMac3,1"))
+               return -ENODEV;
+
        clamp = kmalloc(sizeof(struct wf_control), GFP_KERNEL);
        if (clamp == NULL)
                return -ENOMEM;
index 906d3ecae6e69e043a31835963c17695a61fdc4c..423bfa2432c02ad4939219c40e2a177f33cf0f8c 100644 (file)
@@ -25,7 +25,7 @@
 
 #include "windfarm.h"
 
-#define VERSION "0.1"
+#define VERSION "0.2"
 
 #undef DEBUG
 
@@ -113,6 +113,7 @@ static struct wf_lm75_sensor *wf_lm75_create(struct i2c_adapter *adapter,
                                             const char *loc)
 {
        struct wf_lm75_sensor *lm;
+       int rc;
 
        DBG("wf_lm75: creating  %s device at address 0x%02x\n",
            ds1775 ? "ds1775" : "lm75", addr);
@@ -139,9 +140,11 @@ static struct wf_lm75_sensor *wf_lm75_create(struct i2c_adapter *adapter,
        lm->i2c.driver = &wf_lm75_driver;
        strncpy(lm->i2c.name, lm->sens.name, I2C_NAME_SIZE-1);
 
-       if (i2c_attach_client(&lm->i2c)) {
-               printk(KERN_ERR "windfarm: failed to attach %s %s to i2c\n",
-                      ds1775 ? "ds1775" : "lm75", lm->i2c.name);
+       rc = i2c_attach_client(&lm->i2c);
+       if (rc) {
+               printk(KERN_ERR "windfarm: failed to attach %s %s to i2c,"
+                      " err %d\n", ds1775 ? "ds1775" : "lm75",
+                      lm->i2c.name, rc);
                goto fail;
        }
 
@@ -175,16 +178,22 @@ static int wf_lm75_attach(struct i2c_adapter *adapter)
             (dev = of_get_next_child(busnode, dev)) != NULL;) {
                const char *loc =
                        get_property(dev, "hwsensor-location", NULL);
-               u32 *reg = (u32 *)get_property(dev, "reg", NULL);
-               DBG(" dev: %s... (loc: %p, reg: %p)\n", dev->name, loc, reg);
-               if (loc == NULL || reg == NULL)
+               u8 addr;
+
+               /* We must re-match the adapter in order to properly check
+                * the channel on multibus setups
+                */
+               if (!pmac_i2c_match_adapter(dev, adapter))
+                       continue;
+               addr = pmac_i2c_get_dev_addr(dev);
+               if (loc == NULL || addr == 0)
                        continue;
                /* real lm75 */
                if (device_is_compatible(dev, "lm75"))
-                       wf_lm75_create(adapter, *reg, 0, loc);
+                       wf_lm75_create(adapter, addr, 0, loc);
                /* ds1775 (compatible, better resolution */
                else if (device_is_compatible(dev, "ds1775"))
-                       wf_lm75_create(adapter, *reg, 1, loc);
+                       wf_lm75_create(adapter, addr, 1, loc);
        }
        return 0;
 }
@@ -206,6 +215,11 @@ static int wf_lm75_detach(struct i2c_client *client)
 
 static int __init wf_lm75_sensor_init(void)
 {
+       /* Don't register on old machines that use therm_pm72 for now */
+       if (machine_is_compatible("PowerMac7,2") ||
+           machine_is_compatible("PowerMac7,3") ||
+           machine_is_compatible("RackMac3,1"))
+               return -ENODEV;
        return i2c_add_driver(&wf_lm75_driver);
 }
 
index 5b9ad6ca7cba07e28996d4af2f3f703ad2321c0a..8e99d408fddd5c62db695acb61266fe9b70b9b88 100644 (file)
@@ -17,7 +17,7 @@
 
 #include "windfarm.h"
 
-#define VERSION "0.1"
+#define VERSION "0.2"
 
 /* This currently only exports the external temperature sensor,
    since that's all the control loops need. */
@@ -81,7 +81,7 @@ static struct wf_sensor_ops wf_max6690_ops = {
 static void wf_max6690_create(struct i2c_adapter *adapter, u8 addr)
 {
        struct wf_6690_sensor *max;
-       char *name = "u4-temp";
+       char *name = "backside-temp";
 
        max = kzalloc(sizeof(struct wf_6690_sensor), GFP_KERNEL);
        if (max == NULL) {
@@ -118,7 +118,6 @@ static int wf_max6690_attach(struct i2c_adapter *adapter)
        struct device_node *busnode, *dev = NULL;
        struct pmac_i2c_bus *bus;
        const char *loc;
-       u32 *reg;
 
        bus = pmac_i2c_adapter_to_bus(adapter);
        if (bus == NULL)
@@ -126,16 +125,23 @@ static int wf_max6690_attach(struct i2c_adapter *adapter)
        busnode = pmac_i2c_get_bus_node(bus);
 
        while ((dev = of_get_next_child(busnode, dev)) != NULL) {
+               u8 addr;
+
+               /* We must re-match the adapter in order to properly check
+                * the channel on multibus setups
+                */
+               if (!pmac_i2c_match_adapter(dev, adapter))
+                       continue;
                if (!device_is_compatible(dev, "max6690"))
                        continue;
+               addr = pmac_i2c_get_dev_addr(dev);
                loc = get_property(dev, "hwsensor-location", NULL);
-               reg = (u32 *) get_property(dev, "reg", NULL);
-               if (!loc || !reg)
+               if (loc == NULL || addr == 0)
                        continue;
-               printk("found max6690, loc=%s reg=%x\n", loc, *reg);
+               printk("found max6690, loc=%s addr=0x%02x\n", loc, addr);
                if (strcmp(loc, "BACKSIDE"))
                        continue;
-               wf_max6690_create(adapter, *reg);
+               wf_max6690_create(adapter, addr);
        }
 
        return 0;
@@ -153,6 +159,11 @@ static int wf_max6690_detach(struct i2c_client *client)
 
 static int __init wf_max6690_sensor_init(void)
 {
+       /* Don't register on old machines that use therm_pm72 for now */
+       if (machine_is_compatible("PowerMac7,2") ||
+           machine_is_compatible("PowerMac7,3") ||
+           machine_is_compatible("RackMac3,1"))
+               return -ENODEV;
        return i2c_add_driver(&wf_max6690_driver);
 }
 
index c2a4e689c784e776fca5968561d6da4d23e0935a..ef66bf2778ecab42565e2da225c368b8af056aee 100644 (file)
@@ -358,6 +358,7 @@ static void backside_fan_tick(void)
                return;
        if (!backside_tick) {
                /* first time; initialize things */
+               printk(KERN_INFO "windfarm: Backside control loop started.\n");
                backside_param.min = backside_fan->ops->get_min(backside_fan);
                backside_param.max = backside_fan->ops->get_max(backside_fan);
                wf_pid_init(&backside_pid, &backside_param);
@@ -407,6 +408,7 @@ static void drive_bay_fan_tick(void)
                return;
        if (!drive_bay_tick) {
                /* first time; initialize things */
+               printk(KERN_INFO "windfarm: Drive bay control loop started.\n");
                drive_bay_prm.min = drive_bay_fan->ops->get_min(drive_bay_fan);
                drive_bay_prm.max = drive_bay_fan->ops->get_max(drive_bay_fan);
                wf_pid_init(&drive_bay_pid, &drive_bay_prm);
@@ -458,6 +460,7 @@ static void slots_fan_tick(void)
                return;
        if (!slots_started) {
                /* first time; initialize things */
+               printk(KERN_INFO "windfarm: Slots control loop started.\n");
                wf_pid_init(&slots_pid, &slots_param);
                slots_started = 1;
        }
@@ -504,6 +507,7 @@ static void pm112_tick(void)
 
        if (!started) {
                started = 1;
+               printk(KERN_INFO "windfarm: CPUs control loops started.\n");
                for (i = 0; i < nr_cores; ++i) {
                        if (create_cpu_loop(i) < 0) {
                                failure_state = FAILURE_PERM;
@@ -594,8 +598,6 @@ static void pm112_new_sensor(struct wf_sensor *sr)
 {
        unsigned int i;
 
-       if (have_all_sensors)
-               return;
        if (!strncmp(sr->name, "cpu-temp-", 9)) {
                i = sr->name[9] - '0';
                if (sr->name[10] == 0 && i < NR_CORES &&
@@ -613,7 +615,7 @@ static void pm112_new_sensor(struct wf_sensor *sr)
        } else if (!strcmp(sr->name, "slots-power")) {
                if (slots_power == NULL && wf_get_sensor(sr) == 0)
                        slots_power = sr;
-       } else if (!strcmp(sr->name, "u4-temp")) {
+       } else if (!strcmp(sr->name, "backside-temp")) {
                if (u4_temp == NULL && wf_get_sensor(sr) == 0)
                        u4_temp = sr;
        } else
index 90d005bb4d1cf976b6b28d61464bfe7750515096..5638518968c3d8a9b2c543983d5eb389505ca0b5 100644 (file)
@@ -20,6 +20,8 @@
 #define PPC_FEATURE_POWER5_PLUS                0x00020000
 #define PPC_FEATURE_CELL               0x00010000
 #define PPC_FEATURE_BOOKE              0x00008000
+#define PPC_FEATURE_SMT                        0x00004000
+#define PPC_FEATURE_ICACHE_SNOOP       0x00002000
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
index e9590c06ad9276541a191ec1f3a3057452c7bde9..80a7832d272177ec255189ba68b361a29d83df12 100644 (file)
@@ -88,4 +88,4 @@
     (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
 
 #define pud_ERROR(e) \
-       printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pud_val(e))
+       printk("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pud_val(e))
index 237fc2b729745121069423ae767ae38e181f2de9..ffc7462d77ba752f1d803a73326a09a48531f026 100644 (file)
@@ -37,7 +37,6 @@ struct thread_info {
        int             preempt_count;          /* 0 => preemptable,
                                                   <0 => BUG */
        struct restart_block restart_block;
-       void __user *nvgprs_frame;
        /* low level flags - has atomic operations done on it */
        unsigned long   flags ____cacheline_aligned_in_smp;
 };
@@ -120,7 +119,6 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_MEMDIE             10
 #define TIF_SECCOMP            11      /* secure computing */
 #define TIF_RESTOREALL         12      /* Restore all regs (implies NOERROR) */
-#define TIF_SAVE_NVGPRS                13      /* Save r14-r31 in signal frame */
 #define TIF_NOERROR            14      /* Force successful syscall return */
 #define TIF_RESTORE_SIGMASK    15      /* Restore signal mask in do_signal */
 
@@ -137,15 +135,13 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SINGLESTEP                (1<<TIF_SINGLESTEP)
 #define _TIF_SECCOMP           (1<<TIF_SECCOMP)
 #define _TIF_RESTOREALL                (1<<TIF_RESTOREALL)
-#define _TIF_SAVE_NVGPRS       (1<<TIF_SAVE_NVGPRS)
 #define _TIF_NOERROR           (1<<TIF_NOERROR)
 #define _TIF_RESTORE_SIGMASK   (1<<TIF_RESTORE_SIGMASK)
 #define _TIF_SYSCALL_T_OR_A    (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP)
 
 #define _TIF_USER_WORK_MASK    (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | \
-                                _TIF_NEED_RESCHED | _TIF_RESTOREALL | \
-                                _TIF_RESTORE_SIGMASK)
-#define _TIF_PERSYSCALL_MASK   (_TIF_RESTOREALL|_TIF_NOERROR|_TIF_SAVE_NVGPRS)
+                                _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK)
+#define _TIF_PERSYSCALL_MASK   (_TIF_RESTOREALL|_TIF_NOERROR)
 
 #endif /* __KERNEL__ */