aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/mm/tlbex.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/mm/tlbex.c')
-rw-r--r--arch/mips/mm/tlbex.c327
1 files changed, 180 insertions, 147 deletions
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index afeef93f81a7..556cb4815770 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -136,7 +136,7 @@ static int scratchpad_offset(int i)
* why; it's not an issue caused by the core RTL.
*
*/
-static int __cpuinit m4kc_tlbp_war(void)
+static int m4kc_tlbp_war(void)
{
return (current_cpu_data.processor_id & 0xffff00) ==
(PRID_COMP_MIPS | PRID_IMP_4KC);
@@ -181,11 +181,9 @@ UASM_L_LA(_large_segbits_fault)
UASM_L_LA(_tlb_huge_update)
#endif
-static int __cpuinitdata hazard_instance;
+static int hazard_instance;
-static void __cpuinit uasm_bgezl_hazard(u32 **p,
- struct uasm_reloc **r,
- int instance)
+static void uasm_bgezl_hazard(u32 **p, struct uasm_reloc **r, int instance)
{
switch (instance) {
case 0 ... 7:
@@ -196,9 +194,7 @@ static void __cpuinit uasm_bgezl_hazard(u32 **p,
}
}
-static void __cpuinit uasm_bgezl_label(struct uasm_label **l,
- u32 **p,
- int instance)
+static void uasm_bgezl_label(struct uasm_label **l, u32 **p, int instance)
{
switch (instance) {
case 0 ... 7:
@@ -295,17 +291,28 @@ static inline void dump_handler(const char *symbol, const u32 *handler, int coun
* We deliberately chose a buffer size of 128, so we won't scribble
* over anything important on overflow before we panic.
*/
-static u32 tlb_handler[128] __cpuinitdata;
+static u32 tlb_handler[128];
/* simply assume worst case size for labels and relocs */
-static struct uasm_label labels[128] __cpuinitdata;
-static struct uasm_reloc relocs[128] __cpuinitdata;
+static struct uasm_label labels[128];
+static struct uasm_reloc relocs[128];
-static int check_for_high_segbits __cpuinitdata;
+static int check_for_high_segbits;
-static unsigned int kscratch_used_mask __cpuinitdata;
+static unsigned int kscratch_used_mask;
-static int __cpuinit allocate_kscratch(void)
+static inline int __maybe_unused c0_kscratch(void)
+{
+ switch (current_cpu_type()) {
+ case CPU_XLP:
+ case CPU_XLR:
+ return 22;
+ default:
+ return 31;
+ }
+}
+
+static int allocate_kscratch(void)
{
int r;
unsigned int a = cpu_data[0].kscratch_mask & ~kscratch_used_mask;
@@ -322,11 +329,11 @@ static int __cpuinit allocate_kscratch(void)
return r;
}
-static int scratch_reg __cpuinitdata;
-static int pgd_reg __cpuinitdata;
+static int scratch_reg;
+static int pgd_reg;
enum vmalloc64_mode {not_refill, refill_scratch, refill_noscratch};
-static struct work_registers __cpuinit build_get_work_registers(u32 **p)
+static struct work_registers build_get_work_registers(u32 **p)
{
struct work_registers r;
@@ -334,9 +341,9 @@ static struct work_registers __cpuinit build_get_work_registers(u32 **p)
int smp_processor_id_sel;
int smp_processor_id_shift;
- if (scratch_reg > 0) {
+ if (scratch_reg >= 0) {
/* Save in CPU local C0_KScratch? */
- UASM_i_MTC0(p, 1, 31, scratch_reg);
+ UASM_i_MTC0(p, 1, c0_kscratch(), scratch_reg);
r.r1 = K0;
r.r2 = K1;
r.r3 = 1;
@@ -382,10 +389,10 @@ static struct work_registers __cpuinit build_get_work_registers(u32 **p)
return r;
}
-static void __cpuinit build_restore_work_registers(u32 **p)
+static void build_restore_work_registers(u32 **p)
{
- if (scratch_reg > 0) {
- UASM_i_MFC0(p, 1, 31, scratch_reg);
+ if (scratch_reg >= 0) {
+ UASM_i_MFC0(p, 1, c0_kscratch(), scratch_reg);
return;
}
/* K0 already points to save area, restore $1 and $2 */
@@ -407,7 +414,7 @@ extern unsigned long pgd_current[];
/*
* The R3000 TLB handler is simple.
*/
-static void __cpuinit build_r3000_tlb_refill_handler(void)
+static void build_r3000_tlb_refill_handler(void)
{
long pgdc = (long)pgd_current;
u32 *p;
@@ -452,7 +459,7 @@ static void __cpuinit build_r3000_tlb_refill_handler(void)
* other one.To keep things simple, we first assume linear space,
* then we relocate it to the final handler layout as needed.
*/
-static u32 final_handler[64] __cpuinitdata;
+static u32 final_handler[64];
/*
* Hazards
@@ -476,7 +483,7 @@ static u32 final_handler[64] __cpuinitdata;
*
* As if we MIPS hackers wouldn't know how to nop pipelines happy ...
*/
-static void __cpuinit __maybe_unused build_tlb_probe_entry(u32 **p)
+static void __maybe_unused build_tlb_probe_entry(u32 **p)
{
switch (current_cpu_type()) {
/* Found by experiment: R4600 v2.0/R4700 needs this, too. */
@@ -500,9 +507,9 @@ static void __cpuinit __maybe_unused build_tlb_probe_entry(u32 **p)
*/
enum tlb_write_entry { tlb_random, tlb_indexed };
-static void __cpuinit build_tlb_write_entry(u32 **p, struct uasm_label **l,
- struct uasm_reloc **r,
- enum tlb_write_entry wmode)
+static void build_tlb_write_entry(u32 **p, struct uasm_label **l,
+ struct uasm_reloc **r,
+ enum tlb_write_entry wmode)
{
void(*tlbw)(u32 **) = NULL;
@@ -636,8 +643,8 @@ static void __cpuinit build_tlb_write_entry(u32 **p, struct uasm_label **l,
}
}
-static __cpuinit __maybe_unused void build_convert_pte_to_entrylo(u32 **p,
- unsigned int reg)
+static __maybe_unused void build_convert_pte_to_entrylo(u32 **p,
+ unsigned int reg)
{
if (cpu_has_rixi) {
UASM_i_ROTR(p, reg, reg, ilog2(_PAGE_GLOBAL));
@@ -652,11 +659,9 @@ static __cpuinit __maybe_unused void build_convert_pte_to_entrylo(u32 **p,
#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
-static __cpuinit void build_restore_pagemask(u32 **p,
- struct uasm_reloc **r,
- unsigned int tmp,
- enum label_id lid,
- int restore_scratch)
+static void build_restore_pagemask(u32 **p, struct uasm_reloc **r,
+ unsigned int tmp, enum label_id lid,
+ int restore_scratch)
{
if (restore_scratch) {
/* Reset default page size */
@@ -673,8 +678,8 @@ static __cpuinit void build_restore_pagemask(u32 **p,
uasm_i_mtc0(p, 0, C0_PAGEMASK);
uasm_il_b(p, r, lid);
}
- if (scratch_reg > 0)
- UASM_i_MFC0(p, 1, 31, scratch_reg);
+ if (scratch_reg >= 0)
+ UASM_i_MFC0(p, 1, c0_kscratch(), scratch_reg);
else
UASM_i_LW(p, 1, scratchpad_offset(0), 0);
} else {
@@ -695,12 +700,11 @@ static __cpuinit void build_restore_pagemask(u32 **p,
}
}
-static __cpuinit void build_huge_tlb_write_entry(u32 **p,
- struct uasm_label **l,
- struct uasm_reloc **r,
- unsigned int tmp,
- enum tlb_write_entry wmode,
- int restore_scratch)
+static void build_huge_tlb_write_entry(u32 **p, struct uasm_label **l,
+ struct uasm_reloc **r,
+ unsigned int tmp,
+ enum tlb_write_entry wmode,
+ int restore_scratch)
{
/* Set huge page tlb entry size */
uasm_i_lui(p, tmp, PM_HUGE_MASK >> 16);
@@ -715,9 +719,9 @@ static __cpuinit void build_huge_tlb_write_entry(u32 **p,
/*
* Check if Huge PTE is present, if so then jump to LABEL.
*/
-static void __cpuinit
+static void
build_is_huge_pte(u32 **p, struct uasm_reloc **r, unsigned int tmp,
- unsigned int pmd, int lid)
+ unsigned int pmd, int lid)
{
UASM_i_LW(p, tmp, 0, pmd);
if (use_bbit_insns()) {
@@ -728,9 +732,8 @@ build_is_huge_pte(u32 **p, struct uasm_reloc **r, unsigned int tmp,
}
}
-static __cpuinit void build_huge_update_entries(u32 **p,
- unsigned int pte,
- unsigned int tmp)
+static void build_huge_update_entries(u32 **p, unsigned int pte,
+ unsigned int tmp)
{
int small_sequence;
@@ -760,11 +763,10 @@ static __cpuinit void build_huge_update_entries(u32 **p,
UASM_i_MTC0(p, pte, C0_ENTRYLO1); /* load it */
}
-static __cpuinit void build_huge_handler_tail(u32 **p,
- struct uasm_reloc **r,
- struct uasm_label **l,
- unsigned int pte,
- unsigned int ptr)
+static void build_huge_handler_tail(u32 **p, struct uasm_reloc **r,
+ struct uasm_label **l,
+ unsigned int pte,
+ unsigned int ptr)
{
#ifdef CONFIG_SMP
UASM_i_SC(p, pte, 0, ptr);
@@ -783,7 +785,7 @@ static __cpuinit void build_huge_handler_tail(u32 **p,
* TMP and PTR are scratch.
* TMP will be clobbered, PTR will hold the pmd entry.
*/
-static void __cpuinit
+static void
build_get_pmde64(u32 **p, struct uasm_label **l, struct uasm_reloc **r,
unsigned int tmp, unsigned int ptr)
{
@@ -817,7 +819,7 @@ build_get_pmde64(u32 **p, struct uasm_label **l, struct uasm_reloc **r,
#ifdef CONFIG_MIPS_PGD_C0_CONTEXT
if (pgd_reg != -1) {
/* pgd is in pgd_reg */
- UASM_i_MFC0(p, ptr, 31, pgd_reg);
+ UASM_i_MFC0(p, ptr, c0_kscratch(), pgd_reg);
} else {
/*
* &pgd << 11 stored in CONTEXT [23..63].
@@ -875,7 +877,7 @@ build_get_pmde64(u32 **p, struct uasm_label **l, struct uasm_reloc **r,
* BVADDR is the faulting address, PTR is scratch.
* PTR will hold the pgd for vmalloc.
*/
-static void __cpuinit
+static void
build_get_pgd_vmalloc64(u32 **p, struct uasm_label **l, struct uasm_reloc **r,
unsigned int bvaddr, unsigned int ptr,
enum vmalloc64_mode mode)
@@ -929,8 +931,8 @@ build_get_pgd_vmalloc64(u32 **p, struct uasm_label **l, struct uasm_reloc **r,
uasm_i_jr(p, ptr);
if (mode == refill_scratch) {
- if (scratch_reg > 0)
- UASM_i_MFC0(p, 1, 31, scratch_reg);
+ if (scratch_reg >= 0)
+ UASM_i_MFC0(p, 1, c0_kscratch(), scratch_reg);
else
UASM_i_LW(p, 1, scratchpad_offset(0), 0);
} else {
@@ -945,7 +947,7 @@ build_get_pgd_vmalloc64(u32 **p, struct uasm_label **l, struct uasm_reloc **r,
* TMP and PTR are scratch.
* TMP will be clobbered, PTR will hold the pgd entry.
*/
-static void __cpuinit __maybe_unused
+static void __maybe_unused
build_get_pgde32(u32 **p, unsigned int tmp, unsigned int ptr)
{
long pgdc = (long)pgd_current;
@@ -961,7 +963,7 @@ build_get_pgde32(u32 **p, unsigned int tmp, unsigned int ptr)
uasm_i_srl(p, ptr, ptr, 19);
#else
/*
- * smp_processor_id() << 3 is stored in CONTEXT.
+ * smp_processor_id() << 2 is stored in CONTEXT.
*/
uasm_i_mfc0(p, ptr, C0_CONTEXT);
UASM_i_LA_mostly(p, tmp, pgdc);
@@ -980,7 +982,7 @@ build_get_pgde32(u32 **p, unsigned int tmp, unsigned int ptr)
#endif /* !CONFIG_64BIT */
-static void __cpuinit build_adjust_context(u32 **p, unsigned int ctx)
+static void build_adjust_context(u32 **p, unsigned int ctx)
{
unsigned int shift = 4 - (PTE_T_LOG2 + 1) + PAGE_SHIFT - 12;
unsigned int mask = (PTRS_PER_PTE / 2 - 1) << (PTE_T_LOG2 + 1);
@@ -1006,7 +1008,7 @@ static void __cpuinit build_adjust_context(u32 **p, unsigned int ctx)
uasm_i_andi(p, ctx, ctx, mask);
}
-static void __cpuinit build_get_ptep(u32 **p, unsigned int tmp, unsigned int ptr)
+static void build_get_ptep(u32 **p, unsigned int tmp, unsigned int ptr)
{
/*
* Bug workaround for the Nevada. It seems as if under certain
@@ -1031,8 +1033,7 @@ static void __cpuinit build_get_ptep(u32 **p, unsigned int tmp, unsigned int ptr
UASM_i_ADDU(p, ptr, ptr, tmp); /* add in offset */
}
-static void __cpuinit build_update_entries(u32 **p, unsigned int tmp,
- unsigned int ptep)
+static void build_update_entries(u32 **p, unsigned int tmp, unsigned int ptep)
{
/*
* 64bit address support (36bit on a 32bit CPU) in a 32bit
@@ -1093,10 +1094,10 @@ struct mips_huge_tlb_info {
int restore_scratch;
};
-static struct mips_huge_tlb_info __cpuinit
+static struct mips_huge_tlb_info
build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l,
struct uasm_reloc **r, unsigned int tmp,
- unsigned int ptr, int c0_scratch)
+ unsigned int ptr, int c0_scratch_reg)
{
struct mips_huge_tlb_info rv;
unsigned int even, odd;
@@ -1110,12 +1111,12 @@ build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l,
UASM_i_MFC0(p, tmp, C0_BADVADDR);
if (pgd_reg != -1)
- UASM_i_MFC0(p, ptr, 31, pgd_reg);
+ UASM_i_MFC0(p, ptr, c0_kscratch(), pgd_reg);
else
UASM_i_MFC0(p, ptr, C0_CONTEXT);
- if (c0_scratch >= 0)
- UASM_i_MTC0(p, scratch, 31, c0_scratch);
+ if (c0_scratch_reg >= 0)
+ UASM_i_MTC0(p, scratch, c0_kscratch(), c0_scratch_reg);
else
UASM_i_SW(p, scratch, scratchpad_offset(0), 0);
@@ -1130,14 +1131,14 @@ build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l,
}
} else {
if (pgd_reg != -1)
- UASM_i_MFC0(p, ptr, 31, pgd_reg);
+ UASM_i_MFC0(p, ptr, c0_kscratch(), pgd_reg);
else
UASM_i_MFC0(p, ptr, C0_CONTEXT);
UASM_i_MFC0(p, tmp, C0_BADVADDR);
- if (c0_scratch >= 0)
- UASM_i_MTC0(p, scratch, 31, c0_scratch);
+ if (c0_scratch_reg >= 0)
+ UASM_i_MTC0(p, scratch, c0_kscratch(), c0_scratch_reg);
else
UASM_i_SW(p, scratch, scratchpad_offset(0), 0);
@@ -1242,8 +1243,8 @@ build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l,
}
UASM_i_MTC0(p, odd, C0_ENTRYLO1); /* load it */
- if (c0_scratch >= 0) {
- UASM_i_MFC0(p, scratch, 31, c0_scratch);
+ if (c0_scratch_reg >= 0) {
+ UASM_i_MFC0(p, scratch, c0_kscratch(), c0_scratch_reg);
build_tlb_write_entry(p, l, r, tlb_random);
uasm_l_leave(l, *p);
rv.restore_scratch = 1;
@@ -1271,7 +1272,7 @@ build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l,
*/
#define MIPS64_REFILL_INSNS 32
-static void __cpuinit build_r4000_tlb_refill_handler(void)
+static void build_r4000_tlb_refill_handler(void)
{
u32 *p = tlb_handler;
struct uasm_label *l = labels;
@@ -1286,7 +1287,7 @@ static void __cpuinit build_r4000_tlb_refill_handler(void)
memset(relocs, 0, sizeof(relocs));
memset(final_handler, 0, sizeof(final_handler));
- if ((scratch_reg > 0 || scratchpad_available()) && use_bbit_insns()) {
+ if ((scratch_reg >= 0 || scratchpad_available()) && use_bbit_insns()) {
htlb_info = build_fast_tlb_refill_handler(&p, &l, &r, K0, K1,
scratch_reg);
vmalloc_mode = refill_scratch;
@@ -1444,27 +1445,25 @@ static void __cpuinit build_r4000_tlb_refill_handler(void)
dump_handler("r4000_tlb_refill", (u32 *)ebase, 64);
}
-/*
- * 128 instructions for the fastpath handler is generous and should
- * never be exceeded.
- */
-#define FASTPATH_SIZE 128
+extern u32 handle_tlbl[], handle_tlbl_end[];
+extern u32 handle_tlbs[], handle_tlbs_end[];
+extern u32 handle_tlbm[], handle_tlbm_end[];
-u32 handle_tlbl[FASTPATH_SIZE] __cacheline_aligned;
-u32 handle_tlbs[FASTPATH_SIZE] __cacheline_aligned;
-u32 handle_tlbm[FASTPATH_SIZE] __cacheline_aligned;
#ifdef CONFIG_MIPS_PGD_C0_CONTEXT
-u32 tlbmiss_handler_setup_pgd_array[16] __cacheline_aligned;
+extern u32 tlbmiss_handler_setup_pgd[], tlbmiss_handler_setup_pgd_end[];
-static void __cpuinit build_r4000_setup_pgd(void)
+static void build_r4000_setup_pgd(void)
{
const int a0 = 4;
const int a1 = 5;
- u32 *p = tlbmiss_handler_setup_pgd_array;
+ u32 *p = tlbmiss_handler_setup_pgd;
+ const int tlbmiss_handler_setup_pgd_size =
+ tlbmiss_handler_setup_pgd_end - tlbmiss_handler_setup_pgd;
struct uasm_label *l = labels;
struct uasm_reloc *r = relocs;
- memset(tlbmiss_handler_setup_pgd_array, 0, sizeof(tlbmiss_handler_setup_pgd_array));
+ memset(tlbmiss_handler_setup_pgd, 0, tlbmiss_handler_setup_pgd_size *
+ sizeof(tlbmiss_handler_setup_pgd[0]));
memset(labels, 0, sizeof(labels));
memset(relocs, 0, sizeof(relocs));
@@ -1490,21 +1489,21 @@ static void __cpuinit build_r4000_setup_pgd(void)
} else {
/* PGD in c0_KScratch */
uasm_i_jr(&p, 31);
- UASM_i_MTC0(&p, a0, 31, pgd_reg);
+ UASM_i_MTC0(&p, a0, c0_kscratch(), pgd_reg);
}
- if (p - tlbmiss_handler_setup_pgd_array > ARRAY_SIZE(tlbmiss_handler_setup_pgd_array))
- panic("tlbmiss_handler_setup_pgd_array space exceeded");
+ if (p >= tlbmiss_handler_setup_pgd_end)
+ panic("tlbmiss_handler_setup_pgd space exceeded");
+
uasm_resolve_relocs(relocs, labels);
- pr_debug("Wrote tlbmiss_handler_setup_pgd_array (%u instructions).\n",
- (unsigned int)(p - tlbmiss_handler_setup_pgd_array));
+ pr_debug("Wrote tlbmiss_handler_setup_pgd (%u instructions).\n",
+ (unsigned int)(p - tlbmiss_handler_setup_pgd));
- dump_handler("tlbmiss_handler",
- tlbmiss_handler_setup_pgd_array,
- ARRAY_SIZE(tlbmiss_handler_setup_pgd_array));
+ dump_handler("tlbmiss_handler", tlbmiss_handler_setup_pgd,
+ tlbmiss_handler_setup_pgd_size);
}
#endif
-static void __cpuinit
+static void
iPTE_LW(u32 **p, unsigned int pte, unsigned int ptr)
{
#ifdef CONFIG_SMP
@@ -1524,7 +1523,7 @@ iPTE_LW(u32 **p, unsigned int pte, unsigned int ptr)
#endif
}
-static void __cpuinit
+static void
iPTE_SW(u32 **p, struct uasm_reloc **r, unsigned int pte, unsigned int ptr,
unsigned int mode)
{
@@ -1584,7 +1583,7 @@ iPTE_SW(u32 **p, struct uasm_reloc **r, unsigned int pte, unsigned int ptr,
* the page table where this PTE is located, PTE will be re-loaded
* with it's original value.
*/
-static void __cpuinit
+static void
build_pte_present(u32 **p, struct uasm_reloc **r,
int pte, int ptr, int scratch, enum label_id lid)
{
@@ -1612,7 +1611,7 @@ build_pte_present(u32 **p, struct uasm_reloc **r,
}
/* Make PTE valid, store result in PTR. */
-static void __cpuinit
+static void
build_make_valid(u32 **p, struct uasm_reloc **r, unsigned int pte,
unsigned int ptr)
{
@@ -1625,7 +1624,7 @@ build_make_valid(u32 **p, struct uasm_reloc **r, unsigned int pte,
* Check if PTE can be written to, if not branch to LABEL. Regardless
* restore PTE with value from PTR when done.
*/
-static void __cpuinit
+static void
build_pte_writable(u32 **p, struct uasm_reloc **r,
unsigned int pte, unsigned int ptr, int scratch,
enum label_id lid)
@@ -1645,7 +1644,7 @@ build_pte_writable(u32 **p, struct uasm_reloc **r,
/* Make PTE writable, update software status bits as well, then store
* at PTR.
*/
-static void __cpuinit
+static void
build_make_write(u32 **p, struct uasm_reloc **r, unsigned int pte,
unsigned int ptr)
{
@@ -1659,7 +1658,7 @@ build_make_write(u32 **p, struct uasm_reloc **r, unsigned int pte,
* Check if PTE can be modified, if not branch to LABEL. Regardless
* restore PTE with value from PTR when done.
*/
-static void __cpuinit
+static void
build_pte_modifiable(u32 **p, struct uasm_reloc **r,
unsigned int pte, unsigned int ptr, int scratch,
enum label_id lid)
@@ -1688,7 +1687,7 @@ build_pte_modifiable(u32 **p, struct uasm_reloc **r,
* This places the pte into ENTRYLO0 and writes it with tlbwi.
* Then it returns.
*/
-static void __cpuinit
+static void
build_r3000_pte_reload_tlbwi(u32 **p, unsigned int pte, unsigned int tmp)
{
uasm_i_mtc0(p, pte, C0_ENTRYLO0); /* cp0 delay */
@@ -1704,7 +1703,7 @@ build_r3000_pte_reload_tlbwi(u32 **p, unsigned int pte, unsigned int tmp)
* may have the probe fail bit set as a result of a trap on a
* kseg2 access, i.e. without refill. Then it returns.
*/
-static void __cpuinit
+static void
build_r3000_tlb_reload_write(u32 **p, struct uasm_label **l,
struct uasm_reloc **r, unsigned int pte,
unsigned int tmp)
@@ -1722,7 +1721,7 @@ build_r3000_tlb_reload_write(u32 **p, struct uasm_label **l,
uasm_i_rfe(p); /* branch delay */
}
-static void __cpuinit
+static void
build_r3000_tlbchange_handler_head(u32 **p, unsigned int pte,
unsigned int ptr)
{
@@ -1742,13 +1741,14 @@ build_r3000_tlbchange_handler_head(u32 **p, unsigned int pte,
uasm_i_tlbp(p); /* load delay */
}
-static void __cpuinit build_r3000_tlb_load_handler(void)
+static void build_r3000_tlb_load_handler(void)
{
u32 *p = handle_tlbl;
+ const int handle_tlbl_size = handle_tlbl_end - handle_tlbl;
struct uasm_label *l = labels;
struct uasm_reloc *r = relocs;
- memset(handle_tlbl, 0, sizeof(handle_tlbl));
+ memset(handle_tlbl, 0, handle_tlbl_size * sizeof(handle_tlbl[0]));
memset(labels, 0, sizeof(labels));
memset(relocs, 0, sizeof(relocs));
@@ -1762,23 +1762,24 @@ static void __cpuinit build_r3000_tlb_load_handler(void)
uasm_i_j(&p, (unsigned long)tlb_do_page_fault_0 & 0x0fffffff);
uasm_i_nop(&p);
- if ((p - handle_tlbl) > FASTPATH_SIZE)
+ if (p >= handle_tlbl_end)
panic("TLB load handler fastpath space exceeded");
uasm_resolve_relocs(relocs, labels);
pr_debug("Wrote TLB load handler fastpath (%u instructions).\n",
(unsigned int)(p - handle_tlbl));
- dump_handler("r3000_tlb_load", handle_tlbl, ARRAY_SIZE(handle_tlbl));
+ dump_handler("r3000_tlb_load", handle_tlbl, handle_tlbl_size);
}
-static void __cpuinit build_r3000_tlb_store_handler(void)
+static void build_r3000_tlb_store_handler(void)
{
u32 *p = handle_tlbs;
+ const int handle_tlbs_size = handle_tlbs_end - handle_tlbs;
struct uasm_label *l = labels;
struct uasm_reloc *r = relocs;
- memset(handle_tlbs, 0, sizeof(handle_tlbs));
+ memset(handle_tlbs, 0, handle_tlbs_size * sizeof(handle_tlbs[0]));
memset(labels, 0, sizeof(labels));
memset(relocs, 0, sizeof(relocs));
@@ -1792,23 +1793,24 @@ static void __cpuinit build_r3000_tlb_store_handler(void)
uasm_i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff);
uasm_i_nop(&p);
- if ((p - handle_tlbs) > FASTPATH_SIZE)
+ if (p >= handle_tlbs_end)
panic("TLB store handler fastpath space exceeded");
uasm_resolve_relocs(relocs, labels);
pr_debug("Wrote TLB store handler fastpath (%u instructions).\n",
(unsigned int)(p - handle_tlbs));
- dump_handler("r3000_tlb_store", handle_tlbs, ARRAY_SIZE(handle_tlbs));
+ dump_handler("r3000_tlb_store", handle_tlbs, handle_tlbs_size);
}
-static void __cpuinit build_r3000_tlb_modify_handler(void)
+static void build_r3000_tlb_modify_handler(void)
{
u32 *p = handle_tlbm;
+ const int handle_tlbm_size = handle_tlbm_end - handle_tlbm;
struct uasm_label *l = labels;
struct uasm_reloc *r = relocs;
- memset(handle_tlbm, 0, sizeof(handle_tlbm));
+ memset(handle_tlbm, 0, handle_tlbm_size * sizeof(handle_tlbm[0]));
memset(labels, 0, sizeof(labels));
memset(relocs, 0, sizeof(relocs));
@@ -1822,21 +1824,21 @@ static void __cpuinit build_r3000_tlb_modify_handler(void)
uasm_i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff);
uasm_i_nop(&p);
- if ((p - handle_tlbm) > FASTPATH_SIZE)
+ if (p >= handle_tlbm_end)
panic("TLB modify handler fastpath space exceeded");
uasm_resolve_relocs(relocs, labels);
pr_debug("Wrote TLB modify handler fastpath (%u instructions).\n",
(unsigned int)(p - handle_tlbm));
- dump_handler("r3000_tlb_modify", handle_tlbm, ARRAY_SIZE(handle_tlbm));
+ dump_handler("r3000_tlb_modify", handle_tlbm, handle_tlbm_size);
}
#endif /* CONFIG_MIPS_PGD_C0_CONTEXT */
/*
* R4000 style TLB load/store/modify handlers.
*/
-static struct work_registers __cpuinit
+static struct work_registers
build_r4000_tlbchange_handler_head(u32 **p, struct uasm_label **l,
struct uasm_reloc **r)
{
@@ -1872,7 +1874,7 @@ build_r4000_tlbchange_handler_head(u32 **p, struct uasm_label **l,
return wr;
}
-static void __cpuinit
+static void
build_r4000_tlbchange_handler_tail(u32 **p, struct uasm_label **l,
struct uasm_reloc **r, unsigned int tmp,
unsigned int ptr)
@@ -1890,14 +1892,15 @@ build_r4000_tlbchange_handler_tail(u32 **p, struct uasm_label **l,
#endif
}
-static void __cpuinit build_r4000_tlb_load_handler(void)
+static void build_r4000_tlb_load_handler(void)
{
u32 *p = handle_tlbl;
+ const int handle_tlbl_size = handle_tlbl_end - handle_tlbl;
struct uasm_label *l = labels;
struct uasm_reloc *r = relocs;
struct work_registers wr;
- memset(handle_tlbl, 0, sizeof(handle_tlbl));
+ memset(handle_tlbl, 0, handle_tlbl_size * sizeof(handle_tlbl[0]));
memset(labels, 0, sizeof(labels));
memset(relocs, 0, sizeof(relocs));
@@ -1935,6 +1938,19 @@ static void __cpuinit build_r4000_tlb_load_handler(void)
uasm_i_nop(&p);
uasm_i_tlbr(&p);
+
+ switch (current_cpu_type()) {
+ default:
+ if (cpu_has_mips_r2) {
+ uasm_i_ehb(&p);
+
+ case CPU_CAVIUM_OCTEON:
+ case CPU_CAVIUM_OCTEON_PLUS:
+ case CPU_CAVIUM_OCTEON2:
+ break;
+ }
+ }
+
/* Examine entrylo 0 or 1 based on ptr. */
if (use_bbit_insns()) {
uasm_i_bbit0(&p, wr.r2, ilog2(sizeof(pte_t)), 8);
@@ -1989,6 +2005,19 @@ static void __cpuinit build_r4000_tlb_load_handler(void)
uasm_i_nop(&p);
uasm_i_tlbr(&p);
+
+ switch (current_cpu_type()) {
+ default:
+ if (cpu_has_mips_r2) {
+ uasm_i_ehb(&p);
+
+ case CPU_CAVIUM_OCTEON:
+ case CPU_CAVIUM_OCTEON_PLUS:
+ case CPU_CAVIUM_OCTEON2:
+ break;
+ }
+ }
+
/* Examine entrylo 0 or 1 based on ptr. */
if (use_bbit_insns()) {
uasm_i_bbit0(&p, wr.r2, ilog2(sizeof(pte_t)), 8);
@@ -2036,24 +2065,25 @@ static void __cpuinit build_r4000_tlb_load_handler(void)
uasm_i_j(&p, (unsigned long)tlb_do_page_fault_0 & 0x0fffffff);
uasm_i_nop(&p);
- if ((p - handle_tlbl) > FASTPATH_SIZE)
+ if (p >= handle_tlbl_end)
panic("TLB load handler fastpath space exceeded");
uasm_resolve_relocs(relocs, labels);
pr_debug("Wrote TLB load handler fastpath (%u instructions).\n",
(unsigned int)(p - handle_tlbl));
- dump_handler("r4000_tlb_load", handle_tlbl, ARRAY_SIZE(handle_tlbl));
+ dump_handler("r4000_tlb_load", handle_tlbl, handle_tlbl_size);
}
-static void __cpuinit build_r4000_tlb_store_handler(void)
+static void build_r4000_tlb_store_handler(void)
{
u32 *p = handle_tlbs;
+ const int handle_tlbs_size = handle_tlbs_end - handle_tlbs;
struct uasm_label *l = labels;
struct uasm_reloc *r = relocs;
struct work_registers wr;
- memset(handle_tlbs, 0, sizeof(handle_tlbs));
+ memset(handle_tlbs, 0, handle_tlbs_size * sizeof(handle_tlbs[0]));
memset(labels, 0, sizeof(labels));
memset(relocs, 0, sizeof(relocs));
@@ -2090,24 +2120,25 @@ static void __cpuinit build_r4000_tlb_store_handler(void)
uasm_i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff);
uasm_i_nop(&p);
- if ((p - handle_tlbs) > FASTPATH_SIZE)
+ if (p >= handle_tlbs_end)
panic("TLB store handler fastpath space exceeded");
uasm_resolve_relocs(relocs, labels);
pr_debug("Wrote TLB store handler fastpath (%u instructions).\n",
(unsigned int)(p - handle_tlbs));
- dump_handler("r4000_tlb_store", handle_tlbs, ARRAY_SIZE(handle_tlbs));
+ dump_handler("r4000_tlb_store", handle_tlbs, handle_tlbs_size);
}
-static void __cpuinit build_r4000_tlb_modify_handler(void)
+static void build_r4000_tlb_modify_handler(void)
{
u32 *p = handle_tlbm;
+ const int handle_tlbm_size = handle_tlbm_end - handle_tlbm;
struct uasm_label *l = labels;
struct uasm_reloc *r = relocs;
struct work_registers wr;
- memset(handle_tlbm, 0, sizeof(handle_tlbm));
+ memset(handle_tlbm, 0, handle_tlbm_size * sizeof(handle_tlbm[0]));
memset(labels, 0, sizeof(labels));
memset(relocs, 0, sizeof(relocs));
@@ -2145,17 +2176,31 @@ static void __cpuinit build_r4000_tlb_modify_handler(void)
uasm_i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff);
uasm_i_nop(&p);
- if ((p - handle_tlbm) > FASTPATH_SIZE)
+ if (p >= handle_tlbm_end)
panic("TLB modify handler fastpath space exceeded");
uasm_resolve_relocs(relocs, labels);
pr_debug("Wrote TLB modify handler fastpath (%u instructions).\n",
(unsigned int)(p - handle_tlbm));
- dump_handler("r4000_tlb_modify", handle_tlbm, ARRAY_SIZE(handle_tlbm));
+ dump_handler("r4000_tlb_modify", handle_tlbm, handle_tlbm_size);
+}
+
+static void flush_tlb_handlers(void)
+{
+ local_flush_icache_range((unsigned long)handle_tlbl,
+ (unsigned long)handle_tlbl_end);
+ local_flush_icache_range((unsigned long)handle_tlbs,
+ (unsigned long)handle_tlbs_end);
+ local_flush_icache_range((unsigned long)handle_tlbm,
+ (unsigned long)handle_tlbm_end);
+#ifdef CONFIG_MIPS_PGD_C0_CONTEXT
+ local_flush_icache_range((unsigned long)tlbmiss_handler_setup_pgd,
+ (unsigned long)tlbmiss_handler_setup_pgd_end);
+#endif
}
-void __cpuinit build_tlb_refill_handler(void)
+void build_tlb_refill_handler(void)
{
/*
* The refill handler is generated per-CPU, multi-node systems
@@ -2187,6 +2232,7 @@ void __cpuinit build_tlb_refill_handler(void)
build_r3000_tlb_load_handler();
build_r3000_tlb_store_handler();
build_r3000_tlb_modify_handler();
+ flush_tlb_handlers();
run_once++;
}
#else
@@ -2214,23 +2260,10 @@ void __cpuinit build_tlb_refill_handler(void)
build_r4000_tlb_modify_handler();
if (!cpu_has_local_ebase)
build_r4000_tlb_refill_handler();
+ flush_tlb_handlers();
run_once++;
}
if (cpu_has_local_ebase)
build_r4000_tlb_refill_handler();
}
}
-
-void __cpuinit flush_tlb_handlers(void)
-{
- local_flush_icache_range((unsigned long)handle_tlbl,
- (unsigned long)handle_tlbl + sizeof(handle_tlbl));
- local_flush_icache_range((unsigned long)handle_tlbs,
- (unsigned long)handle_tlbs + sizeof(handle_tlbs));
- local_flush_icache_range((unsigned long)handle_tlbm,
- (unsigned long)handle_tlbm + sizeof(handle_tlbm));
-#ifdef CONFIG_MIPS_PGD_C0_CONTEXT
- local_flush_icache_range((unsigned long)tlbmiss_handler_setup_pgd_array,
- (unsigned long)tlbmiss_handler_setup_pgd_array + sizeof(handle_tlbm));
-#endif
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 08:10:37 +0000