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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>
This commit is contained in:
Michael Neuling 2016-02-19 11:16:24 +11:00 committed by Michael Ellerman
parent 15b1624b78
commit c3ab300ea5
6 changed files with 95 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/powerpc/include/asm/cputable.h
View File

@ -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 {

1
arch/powerpc/include/asm/mmu-hash64.h
View File

@ -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__

1
arch/powerpc/include/asm/mmu.h
View File

@ -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 | \

44
arch/powerpc/kernel/cpu_setup_power.S
View File

@ -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

27
arch/powerpc/kernel/cputable.c
View File

@ -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,

17
arch/powerpc/kernel/mce_power.c
View File

@ -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)
{