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[SPARC64]: SUN4V memory exception trap handlers.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-09 20:20:34 -08:00
parent 618e9ed98a
commit ed6b0b4543
4 changed files with 325 additions and 24 deletions
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45
arch/sparc64/kernel/unaligned.c
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@@ -277,7 +277,7 @@ static void kernel_mna_trap_fault(void)
regs->tstate |= (ASI_AIUS << 24UL);
}
asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn, unsigned long sfar, unsigned long sfsr)
asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
{
enum direction dir = decode_direction(insn);
int size = decode_access_size(insn);
@@ -405,6 +405,9 @@ extern void do_privact(struct pt_regs *regs);
extern void spitfire_data_access_exception(struct pt_regs *regs,
unsigned long sfsr,
unsigned long sfar);
extern void sun4v_data_access_exception(struct pt_regs *regs,
unsigned long addr,
unsigned long type_ctx);
int handle_ldf_stq(u32 insn, struct pt_regs *regs)
{
@@ -447,14 +450,20 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs)
break;
}
default:
spitfire_data_access_exception(regs, 0, addr);
if (tlb_type == hypervisor)
sun4v_data_access_exception(regs, addr, 0);
else
spitfire_data_access_exception(regs, 0, addr);
return 1;
}
if (put_user (first >> 32, (u32 __user *)addr) ||
__put_user ((u32)first, (u32 __user *)(addr + 4)) ||
__put_user (second >> 32, (u32 __user *)(addr + 8)) ||
__put_user ((u32)second, (u32 __user *)(addr + 12))) {
spitfire_data_access_exception(regs, 0, addr);
if (tlb_type == hypervisor)
sun4v_data_access_exception(regs, addr, 0);
else
spitfire_data_access_exception(regs, 0, addr);
return 1;
}
} else {
@@ -467,7 +476,10 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs)
do_privact(regs);
return 1;
} else if (asi > ASI_SNFL) {
spitfire_data_access_exception(regs, 0, addr);
if (tlb_type == hypervisor)
sun4v_data_access_exception(regs, addr, 0);
else
spitfire_data_access_exception(regs, 0, addr);
return 1;
}
switch (insn & 0x180000) {
@@ -484,7 +496,10 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs)
err |= __get_user (data[i], (u32 __user *)(addr + 4*i));
}
if (err && !(asi & 0x2 /* NF */)) {
spitfire_data_access_exception(regs, 0, addr);
if (tlb_type == hypervisor)
sun4v_data_access_exception(regs, addr, 0);
else
spitfire_data_access_exception(regs, 0, addr);
return 1;
}
if (asi & 0x8) /* Little */ {
@@ -548,7 +563,7 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
u32 insn;
u32 first, second;
u64 value;
u8 asi, freg;
u8 freg;
int flag;
struct fpustate *f = FPUSTATE;
@@ -557,7 +572,7 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;
if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
asi = sfsr >> 16;
int asi = decode_asi(insn, regs);
if ((asi > ASI_SNFL) ||
(asi < ASI_P))
goto daex;
@@ -587,7 +602,11 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
*(u64 *)(f->regs + freg) = value;
current_thread_info()->fpsaved[0] |= flag;
} else {
daex: spitfire_data_access_exception(regs, sfsr, sfar);
daex:
if (tlb_type == hypervisor)
sun4v_data_access_exception(regs, sfar, sfsr);
else
spitfire_data_access_exception(regs, sfsr, sfar);
return;
}
advance(regs);
@@ -600,7 +619,7 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
unsigned long tstate = regs->tstate;
u32 insn;
u64 value;
u8 asi, freg;
u8 freg;
int flag;
struct fpustate *f = FPUSTATE;
@@ -609,8 +628,8 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;
if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
int asi = decode_asi(insn, regs);
freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20);
asi = sfsr >> 16;
value = 0;
flag = (freg < 32) ? FPRS_DL : FPRS_DU;
if ((asi > ASI_SNFL) ||
@@ -631,7 +650,11 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
__put_user ((u32)value, (u32 __user *)(sfar + 4)))
goto daex;
} else {
daex: spitfire_data_access_exception(regs, sfsr, sfar);
daex:
if (tlb_type == hypervisor)
sun4v_data_access_exception(regs, sfar, sfsr);
else
spitfire_data_access_exception(regs, sfsr, sfar);
return;
}
advance(regs);