Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright IBM Corp. 2007
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright 2011 Freescale Semiconductor, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/hrtimer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/kvm_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/clockchips.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <asm/reg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <asm/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <asm/kvm_ppc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <asm/disassemble.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <asm/ppc-opcode.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include "timing.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include "trace.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	unsigned long dec_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	unsigned long long dec_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	pr_debug("mtDEC: %lx\n", vcpu->arch.dec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	hrtimer_try_to_cancel(&vcpu->arch.dec_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #ifdef CONFIG_PPC_BOOK3S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	/* mtdec lowers the interrupt line when positive. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	kvmppc_core_dequeue_dec(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #ifdef CONFIG_BOOKE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	/* On BOOKE, DEC = 0 is as good as decrementer not enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	if (vcpu->arch.dec == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	 * The decrementer ticks at the same rate as the timebase, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	 * that's how we convert the guest DEC value to the number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	 * host ticks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	dec_time = vcpu->arch.dec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	 * Guest timebase ticks at the same frequency as host timebase.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	 * So use the host timebase calculations for decrementer emulation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	dec_time = tb_to_ns(dec_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	dec_nsec = do_div(dec_time, NSEC_PER_SEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	hrtimer_start(&vcpu->arch.dec_timer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		ktime_set(dec_time, dec_nsec), HRTIMER_MODE_REL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	vcpu->arch.dec_jiffies = get_tb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	u64 jd = tb - vcpu->arch.dec_jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) #ifdef CONFIG_BOOKE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	if (vcpu->arch.dec < jd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	return vcpu->arch.dec - jd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) static int kvmppc_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	enum emulation_result emulated = EMULATE_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	ulong spr_val = kvmppc_get_gpr(vcpu, rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	switch (sprn) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	case SPRN_SRR0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		kvmppc_set_srr0(vcpu, spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	case SPRN_SRR1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		kvmppc_set_srr1(vcpu, spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	/* XXX We need to context-switch the timebase for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	 * watchdog and FIT. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	case SPRN_TBWL: break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	case SPRN_TBWU: break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	case SPRN_DEC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		vcpu->arch.dec = (u32) spr_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		kvmppc_emulate_dec(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	case SPRN_SPRG0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		kvmppc_set_sprg0(vcpu, spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	case SPRN_SPRG1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		kvmppc_set_sprg1(vcpu, spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	case SPRN_SPRG2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		kvmppc_set_sprg2(vcpu, spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	case SPRN_SPRG3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		kvmppc_set_sprg3(vcpu, spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	/* PIR can legally be written, but we ignore it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	case SPRN_PIR: break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		emulated = vcpu->kvm->arch.kvm_ops->emulate_mtspr(vcpu, sprn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 								  spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		if (emulated == EMULATE_FAIL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 			printk(KERN_INFO "mtspr: unknown spr "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 				"0x%x\n", sprn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	kvmppc_set_exit_type(vcpu, EMULATED_MTSPR_EXITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	return emulated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static int kvmppc_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	enum emulation_result emulated = EMULATE_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	ulong spr_val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	switch (sprn) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	case SPRN_SRR0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		spr_val = kvmppc_get_srr0(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	case SPRN_SRR1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		spr_val = kvmppc_get_srr1(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	case SPRN_PVR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		spr_val = vcpu->arch.pvr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	case SPRN_PIR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		spr_val = vcpu->vcpu_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	/* Note: mftb and TBRL/TBWL are user-accessible, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	 * the guest can always access the real TB anyways.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	 * In fact, we probably will never see these traps. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	case SPRN_TBWL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		spr_val = get_tb() >> 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	case SPRN_TBWU:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		spr_val = get_tb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	case SPRN_SPRG0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		spr_val = kvmppc_get_sprg0(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	case SPRN_SPRG1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		spr_val = kvmppc_get_sprg1(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	case SPRN_SPRG2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		spr_val = kvmppc_get_sprg2(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	case SPRN_SPRG3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		spr_val = kvmppc_get_sprg3(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	/* Note: SPRG4-7 are user-readable, so we don't get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	 * a trap. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	case SPRN_DEC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		spr_val = kvmppc_get_dec(vcpu, get_tb());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		emulated = vcpu->kvm->arch.kvm_ops->emulate_mfspr(vcpu, sprn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 								  &spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		if (unlikely(emulated == EMULATE_FAIL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 			printk(KERN_INFO "mfspr: unknown spr "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 				"0x%x\n", sprn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	if (emulated == EMULATE_DONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		kvmppc_set_gpr(vcpu, rt, spr_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	kvmppc_set_exit_type(vcpu, EMULATED_MFSPR_EXITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	return emulated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /* XXX Should probably auto-generate instruction decoding for a particular core
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)  * from opcode tables in the future. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	u32 inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	int rs, rt, sprn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	enum emulation_result emulated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	int advance = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	/* this default type might be overwritten by subcategories */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	kvmppc_set_exit_type(vcpu, EMULATED_INST_EXITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	if (emulated != EMULATE_DONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		return emulated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	pr_debug("Emulating opcode %d / %d\n", get_op(inst), get_xop(inst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	rs = get_rs(inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	rt = get_rt(inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	sprn = get_sprn(inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	switch (get_op(inst)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	case OP_TRAP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) #ifdef CONFIG_PPC_BOOK3S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	case OP_TRAP_64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		kvmppc_core_queue_program(vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 					  vcpu->arch.shared->esr | ESR_PTR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		advance = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	case 31:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		switch (get_xop(inst)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		case OP_31_XOP_TRAP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		case OP_31_XOP_TRAP_64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) #ifdef CONFIG_PPC_BOOK3S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 			kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 			kvmppc_core_queue_program(vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 					vcpu->arch.shared->esr | ESR_PTR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 			advance = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		case OP_31_XOP_MFSPR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			emulated = kvmppc_emulate_mfspr(vcpu, sprn, rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			if (emulated == EMULATE_AGAIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 				emulated = EMULATE_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 				advance = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		case OP_31_XOP_MTSPR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 			emulated = kvmppc_emulate_mtspr(vcpu, sprn, rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 			if (emulated == EMULATE_AGAIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 				emulated = EMULATE_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 				advance = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		case OP_31_XOP_TLBSYNC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 			/* Attempt core-specific emulation below. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 			emulated = EMULATE_FAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		 * Instruction with primary opcode 0. Based on PowerISA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		 * these are illegal instructions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		if (inst == KVMPPC_INST_SW_BREAKPOINT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 			vcpu->run->exit_reason = KVM_EXIT_DEBUG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 			vcpu->run->debug.arch.status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 			vcpu->run->debug.arch.address = kvmppc_get_pc(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 			emulated = EMULATE_EXIT_USER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 			advance = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 			emulated = EMULATE_FAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 		emulated = EMULATE_FAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	if (emulated == EMULATE_FAIL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		emulated = vcpu->kvm->arch.kvm_ops->emulate_op(vcpu, inst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 							       &advance);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		if (emulated == EMULATE_AGAIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 			advance = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 		} else if (emulated == EMULATE_FAIL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 			advance = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 			printk(KERN_ERR "Couldn't emulate instruction 0x%08x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 			       "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	trace_kvm_ppc_instr(inst, kvmppc_get_pc(vcpu), emulated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	/* Advance past emulated instruction. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	if (advance)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	return emulated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) EXPORT_SYMBOL_GPL(kvmppc_emulate_instruction);