powerpc: Add POWER9 cputable entry

Add a cputable entry for POWER9.  More code is required to actually
boot and run on a POWER9 but this gets the base piece in which we can
start building on.

Copies over from POWER8 except for:
- Adds a new CPU_FTR_ARCH_300 bit to start hanging new architecture
   features from (in subsequent patches).
- Advertises new user features bits PPC_FEATURE2_ARCH_3_00 &
  HAS_IEEE128 when on POWER9.
- Drops CPU_FTR_SUBCORE.
- Drops PMU code and machine check.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index a47e175..94ace9b 100644 (file)
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -171,7 +171,7 @@ enum {
 #define CPU_FTR_ARCH_201               LONG_ASM_CONST(0x0000000200000000)
 #define CPU_FTR_ARCH_206               LONG_ASM_CONST(0x0000000400000000)
 #define CPU_FTR_ARCH_207S              LONG_ASM_CONST(0x0000000800000000)
-/* Free                                        LONG_ASM_CONST(0x0000001000000000) */
+#define CPU_FTR_ARCH_300               LONG_ASM_CONST(0x0000001000000000)
 #define CPU_FTR_MMCRA                  LONG_ASM_CONST(0x0000002000000000)
 #define CPU_FTR_CTRL                   LONG_ASM_CONST(0x0000004000000000)
 #define CPU_FTR_SMT                    LONG_ASM_CONST(0x0000008000000000)
@@ -447,6 +447,16 @@ enum {
            CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_SUBCORE)
 #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG)
 #define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL)
+#define CPU_FTRS_POWER9 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
+           CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\
+           CPU_FTR_MMCRA | CPU_FTR_SMT | \
+           CPU_FTR_COHERENT_ICACHE | \
+           CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \
+           CPU_FTR_DSCR | CPU_FTR_SAO  | \
+           CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \
+           CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \
+           CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \
+           CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_ARCH_300)
 #define CPU_FTRS_CELL  (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
            CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
            CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \
@@ -465,7 +475,7 @@ enum {
            (CPU_FTRS_POWER4 | CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \
             CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \
             CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL | \
-            CPU_FTRS_PA6T | CPU_FTR_VSX)
+            CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9)
 #endif
 #else
 enum {
@@ -516,7 +526,8 @@ enum {
            (CPU_FTRS_POWER4 & CPU_FTRS_PPC970 & CPU_FTRS_POWER5 & \
             CPU_FTRS_POWER6 & CPU_FTRS_POWER7 & CPU_FTRS_CELL & \
             CPU_FTRS_PA6T & CPU_FTRS_POWER8 & CPU_FTRS_POWER8E & \
-            CPU_FTRS_POWER8_DD1 & ~CPU_FTR_HVMODE & CPU_FTRS_POSSIBLE)
+            CPU_FTRS_POWER8_DD1 & ~CPU_FTR_HVMODE & CPU_FTRS_POSSIBLE & \
+            CPU_FTRS_POWER9)
 #endif
 #else
 enum {

diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h
index 7352d3f..e36dc90 100644 (file)
--- a/arch/powerpc/include/asm/mmu-hash64.h
+++ b/arch/powerpc/include/asm/mmu-hash64.h
@@ -114,6 +114,7 @@
 
 #define POWER7_TLB_SETS                128     /* # sets in POWER7 TLB */
 #define POWER8_TLB_SETS                512     /* # sets in POWER8 TLB */
+#define POWER9_TLB_SETS_HASH   256     /* # sets in POWER9 TLB Hash mode */
 
 #ifndef __ASSEMBLY__
 

diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 3d5abfe..54d4650 100644 (file)
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -97,6 +97,7 @@
 #define MMU_FTRS_POWER6                MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE
 #define MMU_FTRS_POWER7                MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE
 #define MMU_FTRS_POWER8                MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE
+#define MMU_FTRS_POWER9                MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE
 #define MMU_FTRS_CELL          MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \
                                MMU_FTR_CI_LARGE_PAGE
 #define MMU_FTRS_PA6T          MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \

diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S
index cb3e272..5932219 100644 (file)
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S
@@ -84,6 +84,39 @@ _GLOBAL(__restore_cpu_power8)
        mtlr    r11
        blr
 
+_GLOBAL(__setup_cpu_power9)
+       mflr    r11
+       bl      __init_FSCR
+       bl      __init_hvmode_206
+       mtlr    r11
+       beqlr
+       li      r0,0
+       mtspr   SPRN_LPID,r0
+       mfspr   r3,SPRN_LPCR
+       ori     r3, r3, LPCR_PECEDH
+       bl      __init_LPCR
+       bl      __init_HFSCR
+       bl      __init_tlb_power9
+       mtlr    r11
+       blr
+
+_GLOBAL(__restore_cpu_power9)
+       mflr    r11
+       bl      __init_FSCR
+       mfmsr   r3
+       rldicl. r0,r3,4,63
+       mtlr    r11
+       beqlr
+       li      r0,0
+       mtspr   SPRN_LPID,r0
+       mfspr   r3,SPRN_LPCR
+       ori     r3, r3, LPCR_PECEDH
+       bl      __init_LPCR
+       bl      __init_HFSCR
+       bl      __init_tlb_power9
+       mtlr    r11
+       blr
+
 __init_hvmode_206:
        /* Disable CPU_FTR_HVMODE and exit if MSR:HV is not set */
        mfmsr   r3
@@ -161,6 +194,17 @@ __init_tlb_power8:
        ptesync
 1:     blr
 
+__init_tlb_power9:
+       li      r6,POWER9_TLB_SETS_HASH
+       mtctr   r6
+       li      r7,0xc00        /* IS field = 0b11 */
+       ptesync
+2:     tlbiel  r7
+       addi    r7,r7,0x1000
+       bdnz    2b
+       ptesync
+1:     blr
+
 __init_PMU_HV:
        li      r5,0
        mtspr   SPRN_MMCRC,r5

diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 7d80bfd..be4d730 100644 (file)
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -70,9 +70,12 @@ extern void __setup_cpu_power7(unsigned long offset, struct cpu_spec* spec);
 extern void __restore_cpu_power7(void);
 extern void __setup_cpu_power8(unsigned long offset, struct cpu_spec* spec);
 extern void __restore_cpu_power8(void);
+extern void __setup_cpu_power9(unsigned long offset, struct cpu_spec* spec);
+extern void __restore_cpu_power9(void);
 extern void __restore_cpu_a2(void);
 extern void __flush_tlb_power7(unsigned int action);
 extern void __flush_tlb_power8(unsigned int action);
+extern void __flush_tlb_power9(unsigned int action);
 extern long __machine_check_early_realmode_p7(struct pt_regs *regs);
 extern long __machine_check_early_realmode_p8(struct pt_regs *regs);
 #endif /* CONFIG_PPC64 */
@@ -116,6 +119,11 @@ extern void __restore_cpu_e6500(void);
 #define COMMON_USER_PA6T       (COMMON_USER_PPC64 | PPC_FEATURE_PA6T |\
                                 PPC_FEATURE_TRUE_LE | \
                                 PPC_FEATURE_HAS_ALTIVEC_COMP)
+#define COMMON_USER_POWER9     COMMON_USER_POWER8
+#define COMMON_USER2_POWER9    (COMMON_USER2_POWER8 | \
+                                PPC_FEATURE2_ARCH_3_00 | \
+                                PPC_FEATURE2_HAS_IEEE128)
+
 #ifdef CONFIG_PPC_BOOK3E_64
 #define COMMON_USER_BOOKE      (COMMON_USER_PPC64 | PPC_FEATURE_BOOKE)
 #else
@@ -499,6 +507,25 @@ static struct cpu_spec __initdata cpu_specs[] = {
                .machine_check_early    = __machine_check_early_realmode_p8,
                .platform               = "power8",
        },
+       {       /* Power9 */
+               .pvr_mask               = 0xffff0000,
+               .pvr_value              = 0x004e0000,
+               .cpu_name               = "POWER9 (raw)",
+               .cpu_features           = CPU_FTRS_POWER9,
+               .cpu_user_features      = COMMON_USER_POWER9,
+               .cpu_user_features2     = COMMON_USER2_POWER9,
+               .mmu_features           = MMU_FTRS_POWER9,
+               .icache_bsize           = 128,
+               .dcache_bsize           = 128,
+               .num_pmcs               = 6,
+               .pmc_type               = PPC_PMC_IBM,
+               .oprofile_cpu_type      = "ppc64/power9",
+               .oprofile_type          = PPC_OPROFILE_INVALID,
+               .cpu_setup              = __setup_cpu_power9,
+               .cpu_restore            = __restore_cpu_power9,
+               .flush_tlb              = __flush_tlb_power9,
+               .platform               = "power9",
+       },
        {       /* Cell Broadband Engine */
                .pvr_mask               = 0xffff0000,
                .pvr_value              = 0x00700000,

diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
index 2c647b1..ee62b19 100644 (file)
--- a/arch/powerpc/kernel/mce_power.c
+++ b/arch/powerpc/kernel/mce_power.c
@@ -54,8 +54,8 @@ static void flush_tlb_206(unsigned int num_sets, unsigned int action)
 }
 
 /*
- * Generic routine to flush TLB on power7. This routine is used as
- * flush_tlb hook in cpu_spec for Power7 processor.
+ * Generic routines to flush TLB on POWER processors. These routines
+ * are used as flush_tlb hook in the cpu_spec.
  *
  * action => TLB_INVAL_SCOPE_GLOBAL:  Invalidate all TLBs.
  *          TLB_INVAL_SCOPE_LPID: Invalidate TLB for current LPID.
@@ -65,18 +65,17 @@ void __flush_tlb_power7(unsigned int action)
        flush_tlb_206(POWER7_TLB_SETS, action);
 }
 
-/*
- * Generic routine to flush TLB on power8. This routine is used as
- * flush_tlb hook in cpu_spec for power8 processor.
- *
- * action => TLB_INVAL_SCOPE_GLOBAL:  Invalidate all TLBs.
- *          TLB_INVAL_SCOPE_LPID: Invalidate TLB for current LPID.
- */
 void __flush_tlb_power8(unsigned int action)
 {
        flush_tlb_206(POWER8_TLB_SETS, action);
 }
 
+void __flush_tlb_power9(unsigned int action)
+{
+       flush_tlb_206(POWER9_TLB_SETS_HASH, action);
+}
+
+
 /* flush SLBs and reload */
 static void flush_and_reload_slb(void)
 {