It's the one aberration in v8, the only cpu that
didn't actually have hardware multiply and divide
instructions.
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
---
I'm tempted to push this.
Sam, what's your take on it?
arch/sparc/include/asm/cypress.h | 79 ---------
arch/sparc/include/asm/elf_32.h | 12 +-
arch/sparc/include/asm/mbus.h | 4 -
arch/sparc/kernel/head_32.S | 15 --
arch/sparc/kernel/irq_32.c | 11 --
arch/sparc/mm/srmmu.c | 333 +-------------------------------------
6 files changed, 5 insertions(+), 449 deletions(-)
delete mode 100644 arch/sparc/include/asm/cypress.h
diff --git a/arch/sparc/include/asm/cypress.h b/arch/sparc/include/asm/cypress.h
deleted file mode 100644
index 95e9772..0000000
--- a/arch/sparc/include/asm/cypress.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * cypress.h: Cypress module specific definitions and defines.
- *
- * Copyright (C) 1995 David S. Miller (davem@xxxxxxxxxxxxxxxx)
- */
-
-#ifndef _SPARC_CYPRESS_H
-#define _SPARC_CYPRESS_H
-
-/* Cypress chips have %psr 'impl' of '0001' and 'vers' of '0001'. */
-
-/* The MMU control register fields on the Sparc Cypress 604/605 MMU's.
- *
- * ---------------------------------------------------------------
- * |implvers| MCA | MCM |MV| MID |BM| C|RSV|MR|CM|CL|CE|RSV|NF|ME|
- * ---------------------------------------------------------------
- * 31 24 23-22 21-20 19 18-15 14 13 12 11 10 9 8 7-2 1 0
- *
- * MCA: MultiChip Access -- Used for configuration of multiple
- * CY7C604/605 cache units.
- * MCM: MultiChip Mask -- Again, for multiple cache unit config.
- * MV: MultiChip Valid -- Indicates MCM and MCA have valid settings.
- * MID: ModuleID -- Unique processor ID for MBus transactions. (605 only)
- * BM: Boot Mode -- 0 = not in boot mode, 1 = in boot mode
- * C: Cacheable -- Indicates whether accesses are cacheable while
- * the MMU is off. 0=no 1=yes
- * MR: MemoryReflection -- Indicates whether the bus attached to the
- * MBus supports memory reflection. 0=no 1=yes (605 only)
- * CM: CacheMode -- Indicates whether the cache is operating in write
- * through or copy-back mode. 0=write-through 1=copy-back
- * CL: CacheLock -- Indicates if the entire cache is locked or not.
- * 0=not-locked 1=locked (604 only)
- * CE: CacheEnable -- Is the virtual cache on? 0=no 1=yes
- * NF: NoFault -- Do faults generate traps? 0=yes 1=no
- * ME: MmuEnable -- Is the MMU doing translations? 0=no 1=yes
- */
-
-#define CYPRESS_MCA 0x00c00000
-#define CYPRESS_MCM 0x00300000
-#define CYPRESS_MVALID 0x00080000
-#define CYPRESS_MIDMASK 0x00078000 /* Only on 605 */
-#define CYPRESS_BMODE 0x00004000
-#define CYPRESS_ACENABLE 0x00002000
-#define CYPRESS_MRFLCT 0x00000800 /* Only on 605 */
-#define CYPRESS_CMODE 0x00000400
-#define CYPRESS_CLOCK 0x00000200 /* Only on 604 */
-#define CYPRESS_CENABLE 0x00000100
-#define CYPRESS_NFAULT 0x00000002
-#define CYPRESS_MENABLE 0x00000001
-
-static inline void cypress_flush_page(unsigned long page)
-{
- __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
- "r" (page), "i" (ASI_M_FLUSH_PAGE));
-}
-
-static inline void cypress_flush_segment(unsigned long addr)
-{
- __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
- "r" (addr), "i" (ASI_M_FLUSH_SEG));
-}
-
-static inline void cypress_flush_region(unsigned long addr)
-{
- __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
- "r" (addr), "i" (ASI_M_FLUSH_REGION));
-}
-
-static inline void cypress_flush_context(void)
-{
- __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" : :
- "i" (ASI_M_FLUSH_CTX));
-}
-
-/* XXX Displacement flushes for buggy chips and initial testing
- * XXX go here.
- */
-
-#endif /* !(_SPARC_CYPRESS_H) */
diff --git a/arch/sparc/include/asm/elf_32.h b/arch/sparc/include/asm/elf_32.h
index b5beb11..2d4d755 100644
--- a/arch/sparc/include/asm/elf_32.h
+++ b/arch/sparc/include/asm/elf_32.h
@@ -118,15 +118,9 @@ typedef struct {
instruction set this cpu supports. This can NOT be done in userspace
on Sparc. */
-/* Most sun4m's have them all.
- * XXX This is gross, set some global variable at boot time. -DaveM
- */
-#define ELF_HWCAP ((HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | \
- HWCAP_SPARC_SWAP | \
- ((srmmu_modtype != Cypress && \
- srmmu_modtype != Cypress_vE && \
- srmmu_modtype != Cypress_vD) ? \
- HWCAP_SPARC_MULDIV : 0)))
+/* Most sun4m's have them all. */
+#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | \
+ HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV)
/* This yields a string that ld.so will use to load implementation
specific libraries for optimization. This is more specific in
diff --git a/arch/sparc/include/asm/mbus.h b/arch/sparc/include/asm/mbus.h
index 69f07a0..14128bc 100644
--- a/arch/sparc/include/asm/mbus.h
+++ b/arch/sparc/include/asm/mbus.h
@@ -8,14 +8,10 @@
#define _SPARC_MBUS_H
#include <asm/ross.h> /* HyperSparc stuff */
-#include <asm/cypress.h> /* Cypress Chips */
#include <asm/viking.h> /* Ugh, bug city... */
enum mbus_module {
HyperSparc = 0,
- Cypress = 1,
- Cypress_vE = 2,
- Cypress_vD = 3,
Swift_ok = 4,
Swift_bad_c = 5,
Swift_lots_o_bugs = 6,
diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index 9b2d43d..6c95e9f 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -746,21 +746,6 @@ sun4d_init:
/* Fall through to sun4m_init */
sun4m_init:
- /* XXX Fucking Cypress... */
- lda [%g0] ASI_M_MMUREGS, %g5
- srl %g5, 28, %g4
-
- cmp %g4, 1
- bne 1f
- srl %g5, 24, %g4
-
- and %g4, 0xf, %g4
- cmp %g4, 7 /* This would be a HyperSparc. */
-
- bne 2f
- nop
-
-1:
#define PATCH_IT(dst, src) \
set (dst), %g5; \
diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index a33009f..ae04914 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -23,14 +23,6 @@
#include "kernel.h"
#include "irq.h"
-#ifdef CONFIG_SMP
-#define SMP_NOP2 "nop; nop;\n\t"
-#define SMP_NOP3 "nop; nop; nop;\n\t"
-#else
-#define SMP_NOP2
-#define SMP_NOP3
-#endif /* SMP */
-
/* platform specific irq setup */
struct sparc_config sparc_config;
@@ -41,7 +33,6 @@ unsigned long arch_local_irq_save(void)
__asm__ __volatile__(
"rd %%psr, %0\n\t"
- SMP_NOP3 /* Sun4m + Cypress + SMP bug */
"or %0, %2, %1\n\t"
"wr %1, 0, %%psr\n\t"
"nop; nop; nop\n"
@@ -59,7 +50,6 @@ void arch_local_irq_enable(void)
__asm__ __volatile__(
"rd %%psr, %0\n\t"
- SMP_NOP3 /* Sun4m + Cypress + SMP bug */
"andn %0, %1, %0\n\t"
"wr %0, 0, %%psr\n\t"
"nop; nop; nop\n"
@@ -76,7 +66,6 @@ void arch_local_irq_restore(unsigned long old_psr)
__asm__ __volatile__(
"rd %%psr, %0\n\t"
"and %2, %1, %2\n\t"
- SMP_NOP2 /* Sun4m + Cypress + SMP bug */
"andn %0, %1, %0\n\t"
"wr %0, %2, %%psr\n\t"
"nop; nop; nop\n"
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index 765b1a5..4875fcd 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -577,244 +577,6 @@ void swift_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
* with respect to cache coherency.
*/
-/* Cypress flushes. */
-static void cypress_flush_cache_all(void)
-{
- volatile unsigned long cypress_sucks;
- unsigned long faddr, tagval;
-
- flush_user_windows();
- for(faddr = 0; faddr < 0x10000; faddr += 0x20) {
- __asm__ __volatile__("lda [%1 + %2] %3, %0\n\t" :
- "=r" (tagval) :
- "r" (faddr), "r" (0x40000),
- "i" (ASI_M_DATAC_TAG));
-
- /* If modified and valid, kick it. */
- if((tagval & 0x60) == 0x60)
- cypress_sucks = *(unsigned long *)(0xf0020000 + faddr);
- }
-}
-
-static void cypress_flush_cache_mm(struct mm_struct *mm)
-{
- register unsigned long a, b, c, d, e, f, g;
- unsigned long flags, faddr;
- int octx;
-
- FLUSH_BEGIN(mm)
- flush_user_windows();
- local_irq_save(flags);
- octx = srmmu_get_context();
- srmmu_set_context(mm->context);
- a = 0x20; b = 0x40; c = 0x60;
- d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
- faddr = (0x10000 - 0x100);
- goto inside;
- do {
- faddr -= 0x100;
- inside:
- __asm__ __volatile__("sta %%g0, [%0] %1\n\t"
- "sta %%g0, [%0 + %2] %1\n\t"
- "sta %%g0, [%0 + %3] %1\n\t"
- "sta %%g0, [%0 + %4] %1\n\t"
- "sta %%g0, [%0 + %5] %1\n\t"
- "sta %%g0, [%0 + %6] %1\n\t"
- "sta %%g0, [%0 + %7] %1\n\t"
- "sta %%g0, [%0 + %8] %1\n\t" : :
- "r" (faddr), "i" (ASI_M_FLUSH_CTX),
- "r" (a), "r" (b), "r" (c), "r" (d),
- "r" (e), "r" (f), "r" (g));
- } while(faddr);
- srmmu_set_context(octx);
- local_irq_restore(flags);
- FLUSH_END
-}
-
-static void cypress_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
- struct mm_struct *mm = vma->vm_mm;
- register unsigned long a, b, c, d, e, f, g;
- unsigned long flags, faddr;
- int octx;
-
- FLUSH_BEGIN(mm)
- flush_user_windows();
- local_irq_save(flags);
- octx = srmmu_get_context();
- srmmu_set_context(mm->context);
- a = 0x20; b = 0x40; c = 0x60;
- d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
- start &= SRMMU_REAL_PMD_MASK;
- while(start < end) {
- faddr = (start + (0x10000 - 0x100));
- goto inside;
- do {
- faddr -= 0x100;
- inside:
- __asm__ __volatile__("sta %%g0, [%0] %1\n\t"
- "sta %%g0, [%0 + %2] %1\n\t"
- "sta %%g0, [%0 + %3] %1\n\t"
- "sta %%g0, [%0 + %4] %1\n\t"
- "sta %%g0, [%0 + %5] %1\n\t"
- "sta %%g0, [%0 + %6] %1\n\t"
- "sta %%g0, [%0 + %7] %1\n\t"
- "sta %%g0, [%0 + %8] %1\n\t" : :
- "r" (faddr),
- "i" (ASI_M_FLUSH_SEG),
- "r" (a), "r" (b), "r" (c), "r" (d),
- "r" (e), "r" (f), "r" (g));
- } while (faddr != start);
- start += SRMMU_REAL_PMD_SIZE;
- }
- srmmu_set_context(octx);
- local_irq_restore(flags);
- FLUSH_END
-}
-
-static void cypress_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
-{
- register unsigned long a, b, c, d, e, f, g;
- struct mm_struct *mm = vma->vm_mm;
- unsigned long flags, line;
- int octx;
-
- FLUSH_BEGIN(mm)
- flush_user_windows();
- local_irq_save(flags);
- octx = srmmu_get_context();
- srmmu_set_context(mm->context);
- a = 0x20; b = 0x40; c = 0x60;
- d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
- page &= PAGE_MASK;
- line = (page + PAGE_SIZE) - 0x100;
- goto inside;
- do {
- line -= 0x100;
- inside:
- __asm__ __volatile__("sta %%g0, [%0] %1\n\t"
- "sta %%g0, [%0 + %2] %1\n\t"
- "sta %%g0, [%0 + %3] %1\n\t"
- "sta %%g0, [%0 + %4] %1\n\t"
- "sta %%g0, [%0 + %5] %1\n\t"
- "sta %%g0, [%0 + %6] %1\n\t"
- "sta %%g0, [%0 + %7] %1\n\t"
- "sta %%g0, [%0 + %8] %1\n\t" : :
- "r" (line),
- "i" (ASI_M_FLUSH_PAGE),
- "r" (a), "r" (b), "r" (c), "r" (d),
- "r" (e), "r" (f), "r" (g));
- } while(line != page);
- srmmu_set_context(octx);
- local_irq_restore(flags);
- FLUSH_END
-}
-
-/* Cypress is copy-back, at least that is how we configure it. */
-static void cypress_flush_page_to_ram(unsigned long page)
-{
- register unsigned long a, b, c, d, e, f, g;
- unsigned long line;
-
- a = 0x20; b = 0x40; c = 0x60; d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
- page &= PAGE_MASK;
- line = (page + PAGE_SIZE) - 0x100;
- goto inside;
- do {
- line -= 0x100;
- inside:
- __asm__ __volatile__("sta %%g0, [%0] %1\n\t"
- "sta %%g0, [%0 + %2] %1\n\t"
- "sta %%g0, [%0 + %3] %1\n\t"
- "sta %%g0, [%0 + %4] %1\n\t"
- "sta %%g0, [%0 + %5] %1\n\t"
- "sta %%g0, [%0 + %6] %1\n\t"
- "sta %%g0, [%0 + %7] %1\n\t"
- "sta %%g0, [%0 + %8] %1\n\t" : :
- "r" (line),
- "i" (ASI_M_FLUSH_PAGE),
- "r" (a), "r" (b), "r" (c), "r" (d),
- "r" (e), "r" (f), "r" (g));
- } while(line != page);
-}
-
-/* Cypress is also IO cache coherent. */
-static void cypress_flush_page_for_dma(unsigned long page)
-{
-}
-
-/* Cypress has unified L2 VIPT, from which both instructions and data
- * are stored. It does not have an onboard icache of any sort, therefore
- * no flush is necessary.
- */
-static void cypress_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr)
-{
-}
-
-static void cypress_flush_tlb_all(void)
-{
- srmmu_flush_whole_tlb();
-}
-
-static void cypress_flush_tlb_mm(struct mm_struct *mm)
-{
- FLUSH_BEGIN(mm)
- __asm__ __volatile__(
- "lda [%0] %3, %%g5\n\t"
- "sta %2, [%0] %3\n\t"
- "sta %%g0, [%1] %4\n\t"
- "sta %%g5, [%0] %3\n"
- : /* no outputs */
- : "r" (SRMMU_CTX_REG), "r" (0x300), "r" (mm->context),
- "i" (ASI_M_MMUREGS), "i" (ASI_M_FLUSH_PROBE)
- : "g5");
- FLUSH_END
-}
-
-static void cypress_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
- struct mm_struct *mm = vma->vm_mm;
- unsigned long size;
-
- FLUSH_BEGIN(mm)
- start &= SRMMU_PGDIR_MASK;
- size = SRMMU_PGDIR_ALIGN(end) - start;
- __asm__ __volatile__(
- "lda [%0] %5, %%g5\n\t"
- "sta %1, [%0] %5\n"
- "1:\n\t"
- "subcc %3, %4, %3\n\t"
- "bne 1b\n\t"
- " sta %%g0, [%2 + %3] %6\n\t"
- "sta %%g5, [%0] %5\n"
- : /* no outputs */
- : "r" (SRMMU_CTX_REG), "r" (mm->context), "r" (start | 0x200),
- "r" (size), "r" (SRMMU_PGDIR_SIZE), "i" (ASI_M_MMUREGS),
- "i" (ASI_M_FLUSH_PROBE)
- : "g5", "cc");
- FLUSH_END
-}
-
-static void cypress_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
-{
- struct mm_struct *mm = vma->vm_mm;
-
- FLUSH_BEGIN(mm)
- __asm__ __volatile__(
- "lda [%0] %3, %%g5\n\t"
- "sta %1, [%0] %3\n\t"
- "sta %%g0, [%2] %4\n\t"
- "sta %%g5, [%0] %3\n"
- : /* no outputs */
- : "r" (SRMMU_CTX_REG), "r" (mm->context), "r" (page & PAGE_MASK),
- "i" (ASI_M_MMUREGS), "i" (ASI_M_FLUSH_PROBE)
- : "g5");
- FLUSH_END
-}
-
/* viking.S */
extern void viking_flush_cache_all(void);
extern void viking_flush_cache_mm(struct mm_struct *mm);
@@ -1307,90 +1069,6 @@ static void __init init_hypersparc(void)
hypersparc_setup_blockops();
}
-static void __cpuinit poke_cypress(void)
-{
- unsigned long mreg = srmmu_get_mmureg();
- unsigned long faddr, tagval;
- volatile unsigned long cypress_sucks;
- volatile unsigned long clear;
-
- clear = srmmu_get_faddr();
- clear = srmmu_get_fstatus();
-
- if (!(mreg & CYPRESS_CENABLE)) {
- for(faddr = 0x0; faddr < 0x10000; faddr += 20) {
- __asm__ __volatile__("sta %%g0, [%0 + %1] %2\n\t"
- "sta %%g0, [%0] %2\n\t" : :
- "r" (faddr), "r" (0x40000),
- "i" (ASI_M_DATAC_TAG));
- }
- } else {
- for(faddr = 0; faddr < 0x10000; faddr += 0x20) {
- __asm__ __volatile__("lda [%1 + %2] %3, %0\n\t" :
- "=r" (tagval) :
- "r" (faddr), "r" (0x40000),
- "i" (ASI_M_DATAC_TAG));
-
- /* If modified and valid, kick it. */
- if((tagval & 0x60) == 0x60)
- cypress_sucks = *(unsigned long *)
- (0xf0020000 + faddr);
- }
- }
-
- /* And one more, for our good neighbor, Mr. Broken Cypress. */
- clear = srmmu_get_faddr();
- clear = srmmu_get_fstatus();
-
- mreg |= (CYPRESS_CENABLE | CYPRESS_CMODE);
- srmmu_set_mmureg(mreg);
-}
-
-static const struct sparc32_cachetlb_ops cypress_ops = {
- .cache_all = cypress_flush_cache_all,
- .cache_mm = cypress_flush_cache_mm,
- .cache_page = cypress_flush_cache_page,
- .cache_range = cypress_flush_cache_range,
- .tlb_all = cypress_flush_tlb_all,
- .tlb_mm = cypress_flush_tlb_mm,
- .tlb_page = cypress_flush_tlb_page,
- .tlb_range = cypress_flush_tlb_range,
- .page_to_ram = cypress_flush_page_to_ram,
- .sig_insns = cypress_flush_sig_insns,
- .page_for_dma = cypress_flush_page_for_dma,
-};
-
-static void __init init_cypress_common(void)
-{
- init_vac_layout();
- sparc32_cachetlb_ops = &cypress_ops;
- poke_srmmu = poke_cypress;
-}
-
-static void __init init_cypress_604(void)
-{
- srmmu_name = "ROSS Cypress-604(UP)";
- srmmu_modtype = Cypress;
- init_cypress_common();
-}
-
-static void __init init_cypress_605(unsigned long mrev)
-{
- srmmu_name = "ROSS Cypress-605(MP)";
- if(mrev == 0xe) {
- srmmu_modtype = Cypress_vE;
- hwbug_bitmask |= HWBUG_COPYBACK_BROKEN;
- } else {
- if(mrev == 0xd) {
- srmmu_modtype = Cypress_vD;
- hwbug_bitmask |= HWBUG_ASIFLUSH_BROKEN;
- } else {
- srmmu_modtype = Cypress;
- }
- }
- init_cypress_common();
-}
-
static void __cpuinit poke_swift(void)
{
unsigned long mreg;
@@ -1912,22 +1590,15 @@ static void __init get_srmmu_type(void)
break;
case 0:
case 2:
- /* Uniprocessor Cypress */
- init_cypress_604();
- break;
case 10:
case 11:
case 12:
- /* _REALLY OLD_ Cypress MP chips... */
case 13:
case 14:
case 15:
- /* MP Cypress mmu/cache-controller */
- init_cypress_605(mod_rev);
- break;
default:
- /* Some other Cypress revision, assume a 605. */
- init_cypress_605(mod_rev);
+ prom_printf("Sparc-Linux Cypress support does not longer exit.\n");
+ prom_halt();
break;
}
return;
--
1.7.10
--
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