e5c0d3ce40
When a Power cpu with 64-bit hash MMU has it's hash page table (HPT) pointer updated by a write to the SDR1 register we need to update some derived variables. Likewise, when the cpu is configured for an external HPT (one not in the guest memory space) some derived variables need to be updated. Currently the logic for this is (partially) duplicated in ppc_store_sdr1() and in spapr_cpu_reset(). In future we're going to need it in some other places, so make some common helpers for this update. In addition the new ppc_hash64_set_external_hpt() helper also updates SDR1 in KVM - it's not updated by the normal runtime KVM <-> qemu CPU synchronization. In a sense this belongs logically in the ppc_hash64_set_sdr1() helper, but that is called from kvm_arch_get_registers() so can't itself call cpu_synchronize_state() without infinite recursion. In practice this doesn't matter because the only other caller is TCG specific. Currently there aren't situations where updating SDR1 at runtime in KVM matters, but there are going to be in future. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
139 lines
5.3 KiB
C
139 lines
5.3 KiB
C
#if !defined (__MMU_HASH64_H__)
|
|
#define __MMU_HASH64_H__
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
|
|
#ifdef TARGET_PPC64
|
|
void ppc_hash64_check_page_sizes(PowerPCCPU *cpu, Error **errp);
|
|
void dump_slb(FILE *f, fprintf_function cpu_fprintf, PowerPCCPU *cpu);
|
|
int ppc_store_slb(PowerPCCPU *cpu, target_ulong slot,
|
|
target_ulong esid, target_ulong vsid);
|
|
hwaddr ppc_hash64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr);
|
|
int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, target_ulong address, int rw,
|
|
int mmu_idx);
|
|
void ppc_hash64_store_hpte(PowerPCCPU *cpu, target_ulong index,
|
|
target_ulong pte0, target_ulong pte1);
|
|
void ppc_hash64_tlb_flush_hpte(PowerPCCPU *cpu,
|
|
target_ulong pte_index,
|
|
target_ulong pte0, target_ulong pte1);
|
|
unsigned ppc_hash64_hpte_page_shift_noslb(PowerPCCPU *cpu,
|
|
uint64_t pte0, uint64_t pte1,
|
|
unsigned *seg_page_shift);
|
|
#endif
|
|
|
|
/*
|
|
* SLB definitions
|
|
*/
|
|
|
|
/* Bits in the SLB ESID word */
|
|
#define SLB_ESID_ESID 0xFFFFFFFFF0000000ULL
|
|
#define SLB_ESID_V 0x0000000008000000ULL /* valid */
|
|
|
|
/* Bits in the SLB VSID word */
|
|
#define SLB_VSID_SHIFT 12
|
|
#define SLB_VSID_SHIFT_1T 24
|
|
#define SLB_VSID_SSIZE_SHIFT 62
|
|
#define SLB_VSID_B 0xc000000000000000ULL
|
|
#define SLB_VSID_B_256M 0x0000000000000000ULL
|
|
#define SLB_VSID_B_1T 0x4000000000000000ULL
|
|
#define SLB_VSID_VSID 0x3FFFFFFFFFFFF000ULL
|
|
#define SLB_VSID_PTEM (SLB_VSID_B | SLB_VSID_VSID)
|
|
#define SLB_VSID_KS 0x0000000000000800ULL
|
|
#define SLB_VSID_KP 0x0000000000000400ULL
|
|
#define SLB_VSID_N 0x0000000000000200ULL /* no-execute */
|
|
#define SLB_VSID_L 0x0000000000000100ULL
|
|
#define SLB_VSID_C 0x0000000000000080ULL /* class */
|
|
#define SLB_VSID_LP 0x0000000000000030ULL
|
|
#define SLB_VSID_ATTR 0x0000000000000FFFULL
|
|
#define SLB_VSID_LLP_MASK (SLB_VSID_L | SLB_VSID_LP)
|
|
#define SLB_VSID_4K 0x0000000000000000ULL
|
|
#define SLB_VSID_64K 0x0000000000000110ULL
|
|
#define SLB_VSID_16M 0x0000000000000100ULL
|
|
#define SLB_VSID_16G 0x0000000000000120ULL
|
|
|
|
/*
|
|
* Hash page table definitions
|
|
*/
|
|
|
|
#define HPTES_PER_GROUP 8
|
|
#define HASH_PTE_SIZE_64 16
|
|
#define HASH_PTEG_SIZE_64 (HASH_PTE_SIZE_64 * HPTES_PER_GROUP)
|
|
|
|
#define HPTE64_V_SSIZE_SHIFT 62
|
|
#define HPTE64_V_AVPN_SHIFT 7
|
|
#define HPTE64_V_AVPN 0x3fffffffffffff80ULL
|
|
#define HPTE64_V_AVPN_VAL(x) (((x) & HPTE64_V_AVPN) >> HPTE64_V_AVPN_SHIFT)
|
|
#define HPTE64_V_COMPARE(x, y) (!(((x) ^ (y)) & 0xffffffffffffff80ULL))
|
|
#define HPTE64_V_LARGE 0x0000000000000004ULL
|
|
#define HPTE64_V_SECONDARY 0x0000000000000002ULL
|
|
#define HPTE64_V_VALID 0x0000000000000001ULL
|
|
|
|
#define HPTE64_R_PP0 0x8000000000000000ULL
|
|
#define HPTE64_R_TS 0x4000000000000000ULL
|
|
#define HPTE64_R_KEY_HI 0x3000000000000000ULL
|
|
#define HPTE64_R_RPN_SHIFT 12
|
|
#define HPTE64_R_RPN 0x0ffffffffffff000ULL
|
|
#define HPTE64_R_FLAGS 0x00000000000003ffULL
|
|
#define HPTE64_R_PP 0x0000000000000003ULL
|
|
#define HPTE64_R_N 0x0000000000000004ULL
|
|
#define HPTE64_R_G 0x0000000000000008ULL
|
|
#define HPTE64_R_M 0x0000000000000010ULL
|
|
#define HPTE64_R_I 0x0000000000000020ULL
|
|
#define HPTE64_R_W 0x0000000000000040ULL
|
|
#define HPTE64_R_WIMG 0x0000000000000078ULL
|
|
#define HPTE64_R_C 0x0000000000000080ULL
|
|
#define HPTE64_R_R 0x0000000000000100ULL
|
|
#define HPTE64_R_KEY_LO 0x0000000000000e00ULL
|
|
#define HPTE64_R_KEY(x) ((((x) & HPTE64_R_KEY_HI) >> 60) | \
|
|
(((x) & HPTE64_R_KEY_LO) >> 9))
|
|
|
|
#define HPTE64_V_1TB_SEG 0x4000000000000000ULL
|
|
#define HPTE64_V_VRMA_MASK 0x4001ffffff000000ULL
|
|
|
|
|
|
extern bool kvmppc_kern_htab;
|
|
|
|
void ppc_hash64_set_sdr1(PowerPCCPU *cpu, target_ulong value,
|
|
Error **errp);
|
|
void ppc_hash64_set_external_hpt(PowerPCCPU *cpu, void *hpt, int shift,
|
|
Error **errp);
|
|
|
|
uint64_t ppc_hash64_start_access(PowerPCCPU *cpu, target_ulong pte_index);
|
|
void ppc_hash64_stop_access(uint64_t token);
|
|
|
|
static inline target_ulong ppc_hash64_load_hpte0(PowerPCCPU *cpu,
|
|
uint64_t token, int index)
|
|
{
|
|
CPUPPCState *env = &cpu->env;
|
|
uint64_t addr;
|
|
|
|
addr = token + (index * HASH_PTE_SIZE_64);
|
|
if (kvmppc_kern_htab || env->external_htab) {
|
|
return ldq_p((const void *)(uintptr_t)addr);
|
|
} else {
|
|
return ldq_phys(CPU(cpu)->as, addr);
|
|
}
|
|
}
|
|
|
|
static inline target_ulong ppc_hash64_load_hpte1(PowerPCCPU *cpu,
|
|
uint64_t token, int index)
|
|
{
|
|
CPUPPCState *env = &cpu->env;
|
|
uint64_t addr;
|
|
|
|
addr = token + (index * HASH_PTE_SIZE_64) + HASH_PTE_SIZE_64/2;
|
|
if (kvmppc_kern_htab || env->external_htab) {
|
|
return ldq_p((const void *)(uintptr_t)addr);
|
|
} else {
|
|
return ldq_phys(CPU(cpu)->as, addr);
|
|
}
|
|
}
|
|
|
|
typedef struct {
|
|
uint64_t pte0, pte1;
|
|
} ppc_hash_pte64_t;
|
|
|
|
#endif /* CONFIG_USER_ONLY */
|
|
|
|
#endif /* !defined (__MMU_HASH64_H__) */
|