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PPC: Implement e500 (FSL) MMU

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Most of the code to support e500 style MMUs is already in place, but
we're missing on some of the special TLB0-TLB1 handling code and slightly
different TLB modification.

This patch adds support for the FSL style MMU.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2011-04-30 23:34:58 +02:00
parent a5858d7af0
commit 01662f3e51
6 changed files with 1022 additions and 115 deletions
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304
target-ppc/cpu.h
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@ -108,8 +108,8 @@ enum powerpc_mmu_t {
POWERPC_MMU_MPC8xx = 0x00000007,
/* BookE MMU model */
POWERPC_MMU_BOOKE = 0x00000008,
/* BookE FSL MMU model */
POWERPC_MMU_BOOKE_FSL = 0x00000009,
/* BookE 2.06 MMU model */
POWERPC_MMU_BOOKE206 = 0x00000009,
/* PowerPC 601 MMU model (specific BATs format) */
POWERPC_MMU_601 = 0x0000000A,
#if defined(TARGET_PPC64)
@ -607,6 +607,224 @@ enum {
#define vscr_nj (((env->vscr) >> VSCR_NJ) & 0x1)
#define vscr_sat (((env->vscr) >> VSCR_SAT) & 0x1)
/*****************************************************************************/
/* BookE e500 MMU registers */
#define MAS0_NV_SHIFT 0
#define MAS0_NV_MASK (0xfff << MAS0_NV_SHIFT)
#define MAS0_WQ_SHIFT 12
#define MAS0_WQ_MASK (3 << MAS0_WQ_SHIFT)
/* Write TLB entry regardless of reservation */
#define MAS0_WQ_ALWAYS (0 << MAS0_WQ_SHIFT)
/* Write TLB entry only already in use */
#define MAS0_WQ_COND (1 << MAS0_WQ_SHIFT)
/* Clear TLB entry */
#define MAS0_WQ_CLR_RSRV (2 << MAS0_WQ_SHIFT)
#define MAS0_HES_SHIFT 14
#define MAS0_HES (1 << MAS0_HES_SHIFT)
#define MAS0_ESEL_SHIFT 16
#define MAS0_ESEL_MASK (0xfff << MAS0_ESEL_SHIFT)
#define MAS0_TLBSEL_SHIFT 28
#define MAS0_TLBSEL_MASK (3 << MAS0_TLBSEL_SHIFT)
#define MAS0_TLBSEL_TLB0 (0 << MAS0_TLBSEL_SHIFT)
#define MAS0_TLBSEL_TLB1 (1 << MAS0_TLBSEL_SHIFT)
#define MAS0_TLBSEL_TLB2 (2 << MAS0_TLBSEL_SHIFT)
#define MAS0_TLBSEL_TLB3 (3 << MAS0_TLBSEL_SHIFT)
#define MAS0_ATSEL_SHIFT 31
#define MAS0_ATSEL (1 << MAS0_ATSEL_SHIFT)
#define MAS0_ATSEL_TLB 0
#define MAS0_ATSEL_LRAT MAS0_ATSEL
#define MAS1_TSIZE_SHIFT 8
#define MAS1_TSIZE_MASK (0xf << MAS1_TSIZE_SHIFT)
#define MAS1_TS_SHIFT 12
#define MAS1_TS (1 << MAS1_TS_SHIFT)
#define MAS1_IND_SHIFT 13
#define MAS1_IND (1 << MAS1_IND_SHIFT)
#define MAS1_TID_SHIFT 16
#define MAS1_TID_MASK (0x3fff << MAS1_TID_SHIFT)
#define MAS1_IPROT_SHIFT 30
#define MAS1_IPROT (1 << MAS1_IPROT_SHIFT)
#define MAS1_VALID_SHIFT 31
#define MAS1_VALID 0x80000000
#define MAS2_EPN_SHIFT 12
#define MAS2_EPN_MASK (0xfffff << MAS2_EPN_SHIFT)
#define MAS2_ACM_SHIFT 6
#define MAS2_ACM (1 << MAS2_ACM_SHIFT)
#define MAS2_VLE_SHIFT 5
#define MAS2_VLE (1 << MAS2_VLE_SHIFT)
#define MAS2_W_SHIFT 4
#define MAS2_W (1 << MAS2_W_SHIFT)
#define MAS2_I_SHIFT 3
#define MAS2_I (1 << MAS2_I_SHIFT)
#define MAS2_M_SHIFT 2
#define MAS2_M (1 << MAS2_M_SHIFT)
#define MAS2_G_SHIFT 1
#define MAS2_G (1 << MAS2_G_SHIFT)
#define MAS2_E_SHIFT 0
#define MAS2_E (1 << MAS2_E_SHIFT)
#define MAS3_RPN_SHIFT 12
#define MAS3_RPN_MASK (0xfffff << MAS3_RPN_SHIFT)
#define MAS3_U0 0x00000200
#define MAS3_U1 0x00000100
#define MAS3_U2 0x00000080
#define MAS3_U3 0x00000040
#define MAS3_UX 0x00000020
#define MAS3_SX 0x00000010
#define MAS3_UW 0x00000008
#define MAS3_SW 0x00000004
#define MAS3_UR 0x00000002
#define MAS3_SR 0x00000001
#define MAS3_SPSIZE_SHIFT 1
#define MAS3_SPSIZE_MASK (0x3e << MAS3_SPSIZE_SHIFT)
#define MAS4_TLBSELD_SHIFT MAS0_TLBSEL_SHIFT
#define MAS4_TLBSELD_MASK MAS0_TLBSEL_MASK
#define MAS4_TIDSELD_MASK 0x00030000
#define MAS4_TIDSELD_PID0 0x00000000
#define MAS4_TIDSELD_PID1 0x00010000
#define MAS4_TIDSELD_PID2 0x00020000
#define MAS4_TIDSELD_PIDZ 0x00030000
#define MAS4_INDD 0x00008000 /* Default IND */
#define MAS4_TSIZED_SHIFT MAS1_TSIZE_SHIFT
#define MAS4_TSIZED_MASK MAS1_TSIZE_MASK
#define MAS4_ACMD 0x00000040
#define MAS4_VLED 0x00000020
#define MAS4_WD 0x00000010
#define MAS4_ID 0x00000008
#define MAS4_MD 0x00000004
#define MAS4_GD 0x00000002
#define MAS4_ED 0x00000001
#define MAS4_WIMGED_MASK 0x0000001f /* Default WIMGE */
#define MAS4_WIMGED_SHIFT 0
#define MAS5_SGS 0x80000000
#define MAS5_SLPID_MASK 0x00000fff
#define MAS6_SPID0 0x3fff0000
#define MAS6_SPID1 0x00007ffe
#define MAS6_ISIZE(x) MAS1_TSIZE(x)
#define MAS6_SAS 0x00000001
#define MAS6_SPID MAS6_SPID0
#define MAS6_SIND 0x00000002 /* Indirect page */
#define MAS6_SIND_SHIFT 1
#define MAS6_SPID_MASK 0x3fff0000
#define MAS6_SPID_SHIFT 16
#define MAS6_ISIZE_MASK 0x00000f80
#define MAS6_ISIZE_SHIFT 7
#define MAS7_RPN 0xffffffff
#define MAS8_TGS 0x80000000
#define MAS8_VF 0x40000000
#define MAS8_TLBPID 0x00000fff
/* Bit definitions for MMUCFG */
#define MMUCFG_MAVN 0x00000003 /* MMU Architecture Version Number */
#define MMUCFG_MAVN_V1 0x00000000 /* v1.0 */
#define MMUCFG_MAVN_V2 0x00000001 /* v2.0 */
#define MMUCFG_NTLBS 0x0000000c /* Number of TLBs */
#define MMUCFG_PIDSIZE 0x000007c0 /* PID Reg Size */
#define MMUCFG_TWC 0x00008000 /* TLB Write Conditional (v2.0) */
#define MMUCFG_LRAT 0x00010000 /* LRAT Supported (v2.0) */
#define MMUCFG_RASIZE 0x00fe0000 /* Real Addr Size */
#define MMUCFG_LPIDSIZE 0x0f000000 /* LPID Reg Size */
/* Bit definitions for MMUCSR0 */
#define MMUCSR0_TLB1FI 0x00000002 /* TLB1 Flash invalidate */
#define MMUCSR0_TLB0FI 0x00000004 /* TLB0 Flash invalidate */
#define MMUCSR0_TLB2FI 0x00000040 /* TLB2 Flash invalidate */
#define MMUCSR0_TLB3FI 0x00000020 /* TLB3 Flash invalidate */
#define MMUCSR0_TLBFI (MMUCSR0_TLB0FI | MMUCSR0_TLB1FI | \
MMUCSR0_TLB2FI | MMUCSR0_TLB3FI)
#define MMUCSR0_TLB0PS 0x00000780 /* TLB0 Page Size */
#define MMUCSR0_TLB1PS 0x00007800 /* TLB1 Page Size */
#define MMUCSR0_TLB2PS 0x00078000 /* TLB2 Page Size */
#define MMUCSR0_TLB3PS 0x00780000 /* TLB3 Page Size */
/* TLBnCFG encoding */
#define TLBnCFG_N_ENTRY 0x00000fff /* number of entries */
#define TLBnCFG_HES 0x00002000 /* HW select supported */
#define TLBnCFG_AVAIL 0x00004000 /* variable page size */
#define TLBnCFG_IPROT 0x00008000 /* IPROT supported */
#define TLBnCFG_GTWE 0x00010000 /* Guest can write */
#define TLBnCFG_IND 0x00020000 /* IND entries supported */
#define TLBnCFG_PT 0x00040000 /* Can load from page table */
#define TLBnCFG_MINSIZE 0x00f00000 /* Minimum Page Size (v1.0) */
#define TLBnCFG_MINSIZE_SHIFT 20
#define TLBnCFG_MAXSIZE 0x000f0000 /* Maximum Page Size (v1.0) */
#define TLBnCFG_MAXSIZE_SHIFT 16
#define TLBnCFG_ASSOC 0xff000000 /* Associativity */
#define TLBnCFG_ASSOC_SHIFT 24
/* TLBnPS encoding */
#define TLBnPS_4K 0x00000004
#define TLBnPS_8K 0x00000008
#define TLBnPS_16K 0x00000010
#define TLBnPS_32K 0x00000020
#define TLBnPS_64K 0x00000040
#define TLBnPS_128K 0x00000080
#define TLBnPS_256K 0x00000100
#define TLBnPS_512K 0x00000200
#define TLBnPS_1M 0x00000400
#define TLBnPS_2M 0x00000800
#define TLBnPS_4M 0x00001000
#define TLBnPS_8M 0x00002000
#define TLBnPS_16M 0x00004000
#define TLBnPS_32M 0x00008000
#define TLBnPS_64M 0x00010000
#define TLBnPS_128M 0x00020000
#define TLBnPS_256M 0x00040000
#define TLBnPS_512M 0x00080000
#define TLBnPS_1G 0x00100000
#define TLBnPS_2G 0x00200000
#define TLBnPS_4G 0x00400000
#define TLBnPS_8G 0x00800000
#define TLBnPS_16G 0x01000000
#define TLBnPS_32G 0x02000000
#define TLBnPS_64G 0x04000000
#define TLBnPS_128G 0x08000000
#define TLBnPS_256G 0x10000000
/* tlbilx action encoding */
#define TLBILX_T_ALL 0
#define TLBILX_T_TID 1
#define TLBILX_T_FULLMATCH 3
#define TLBILX_T_CLASS0 4
#define TLBILX_T_CLASS1 5
#define TLBILX_T_CLASS2 6
#define TLBILX_T_CLASS3 7
/* BookE 2.06 helper defines */
#define BOOKE206_FLUSH_TLB0 (1 << 0)
#define BOOKE206_FLUSH_TLB1 (1 << 1)
#define BOOKE206_FLUSH_TLB2 (1 << 2)
#define BOOKE206_FLUSH_TLB3 (1 << 3)
/* number of possible TLBs */
#define BOOKE206_MAX_TLBN 4
/*****************************************************************************/
/* The whole PowerPC CPU context */
#define NB_MMU_MODES 3
@ -678,7 +896,7 @@ struct CPUPPCState {
int nb_BATs;
target_ulong DBAT[2][8];
target_ulong IBAT[2][8];
/* PowerPC TLB registers (for 4xx and 60x software driven TLBs) */
/* PowerPC TLB registers (for 4xx, e500 and 60x software driven TLBs) */
int nb_tlb; /* Total number of TLB */
int tlb_per_way; /* Speed-up helper: used to avoid divisions at run time */
int nb_ways; /* Number of ways in the TLB set */
@ -856,6 +1074,10 @@ void store_40x_dbcr0 (CPUPPCState *env, uint32_t val);
void store_40x_sler (CPUPPCState *env, uint32_t val);
void store_booke_tcr (CPUPPCState *env, target_ulong val);
void store_booke_tsr (CPUPPCState *env, target_ulong val);
void booke206_flush_tlb(CPUState *env, int flags, const int check_iprot);
int ppcemb_tlb_check(CPUState *env, ppcemb_tlb_t *tlb,
target_phys_addr_t *raddrp, target_ulong address,
uint32_t pid, int ext, int i);
void ppc_tlb_invalidate_all (CPUPPCState *env);
void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr);
#if defined(TARGET_PPC64)
@ -1547,6 +1769,11 @@ enum {
PPC_DCRUX = 0x4000000000000000ULL,
/* popcntw and popcntd instructions */
PPC_POPCNTWD = 0x8000000000000000ULL,
/* extended type values */
/* BookE 2.06 PowerPC specification */
PPC2_BOOKE206 = 0x0000000000000001ULL,
};
/*****************************************************************************/
@ -1699,6 +1926,77 @@ static inline void cpu_set_tls(CPUState *env, target_ulong newtls)
#endif
}
#if !defined(CONFIG_USER_ONLY)
static inline int booke206_tlbe_id(CPUState *env, ppcemb_tlb_t *tlbe)
{
ulong tlbel = (ulong)tlbe;
ulong tlbl = (ulong)env->tlb;
return (tlbel - tlbl) / sizeof(env->tlb[0]);
}
static inline int booke206_tlb_size(CPUState *env, int tlbn)
{
uint32_t tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlbn];
int r = tlbncfg & TLBnCFG_N_ENTRY;
return r;
}
static inline int booke206_tlb_ways(CPUState *env, int tlbn)
{
uint32_t tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlbn];
int r = tlbncfg >> TLBnCFG_ASSOC_SHIFT;
return r;
}
static inline int booke206_tlbe_to_tlbn(CPUState *env, ppcemb_tlb_t *tlbe)
{
int id = booke206_tlbe_id(env, tlbe);
int end = 0;
int i;
for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
end += booke206_tlb_size(env, i);
if (id < end) {
return i;
}
}
cpu_abort(env, "Unknown TLBe: %d\n", id);
return 0;
}
static inline int booke206_tlbe_to_way(CPUState *env, ppcemb_tlb_t *tlb)
{
int tlbn = booke206_tlbe_to_tlbn(env, tlb);
int tlbid = booke206_tlbe_id(env, tlb);
return tlbid & (booke206_tlb_ways(env, tlbn) - 1);
}
static inline ppcemb_tlb_t *booke206_get_tlbe(CPUState *env, const int tlbn,
target_ulong ea, int way)
{
int r;
uint32_t ways = booke206_tlb_ways(env, tlbn);
int ways_bits = ffs(ways) - 1;
int tlb_bits = ffs(booke206_tlb_size(env, tlbn)) - 1;
int i;
way &= ways - 1;
ea >>= MAS2_EPN_SHIFT;
ea &= (1 << (tlb_bits - ways_bits)) - 1;
r = (ea << ways_bits) | way;
/* bump up to tlbn index */
for (i = 0; i < tlbn; i++) {
r += booke206_tlb_size(env, i);
}
return &env->tlb[r].tlbe;
}
#endif
extern void (*cpu_ppc_hypercall)(CPUState *);
#endif /* !defined (__CPU_PPC_H__) */