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ppc queue :

Browse Source 
* debug facility improvements
 * timebase and decrementer fixes
 * record-replay fixes
 * TCG fixes
 * XIVE model improvements for multichip
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Merge tag 'pull-ppc-20230906' of https://github.com/legoater/qemu into staging

ppc queue :

* debug facility improvements
* timebase and decrementer fixes
* record-replay fixes
* TCG fixes
* XIVE model improvements for multichip

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# gpg: Signature made Wed 06 Sep 2023 06:47:06 EDT
# gpg:                using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [unknown]
# gpg:                 aka "Cédric Le Goater <clg@kaod.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* tag 'pull-ppc-20230906' of https://github.com/legoater/qemu: (35 commits)
  ppc/xive: Add support for the PC MMIOs
  ppc/xive: Handle END triggers between chips with MMIOs
  ppc/xive: Introduce a new XiveRouter end_notify() handler
  ppc/xive: Use address_space routines to access the machine RAM
  target/ppc: Fix the order of kvm_enable judgment about kvmppc_set_interrupt()
  hw/ppc/e500: fix broken snapshot replay
  target/ppc: Flush inputs to zero with NJ in ppc_store_vscr
  target/ppc: Fix LQ, STQ register-pair order for big-endian
  tests/avocado: ppc64 reverse debugging tests for pseries and powernv
  tests/avocado: reverse-debugging cope with re-executing breakpoints
  tests/avocado: boot ppc64 pseries replay-record test to Linux VFS mount
  spapr: Fix record-replay machine reset consuming too many events
  spapr: Fix machine reset deadlock from replay-record
  target/ppc: Fix timebase reset with record-replay
  target/ppc: Fix CPU reservation migration for record-replay
  hw/ppc: Read time only once to perform decrementer write
  hw/ppc: Reset timebase facilities on machine reset
  target/ppc: Migrate DECR SPR
  hw/ppc: Always store the decrementer value
  target/ppc: Sign-extend large decrementer to 64-bits
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-09-07 10:23:24 -04:00
commit 269e60635a
34 changed files with 925 additions and 205 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

170
hw/intc/pnv_xive.c
View File

@ -84,28 +84,6 @@ static uint8_t pnv_xive_block_id(PnvXive *xive)
return blk;
}
/*
* Remote access to controllers. HW uses MMIOs. For now, a simple scan
* of the chips is good enough.
*
* TODO: Block scope support
*/
static PnvXive *pnv_xive_get_remote(uint8_t blk)
{
PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
int i;
for (i = 0; i < pnv->num_chips; i++) {
Pnv9Chip *chip9 = PNV9_CHIP(pnv->chips[i]);
PnvXive *xive = &chip9->xive;
if (pnv_xive_block_id(xive) == blk) {
return xive;
}
}
return NULL;
}
/*
* VST accessors for SBE, EAT, ENDT, NVT
*
@ -209,6 +187,42 @@ static uint64_t pnv_xive_vst_addr_indirect(PnvXive *xive, uint32_t type,
return pnv_xive_vst_addr_direct(xive, type, vsd, (idx % vst_per_page));
}
/*
* This is a simplified model of operation forwarding on a remote IC.
*
* A PC MMIO address is built to identify the NVT structure. The load
* on the remote IC will return the address of the structure in RAM,
* which will then be used by pnv_xive_vst_write/read to perform the
* RAM operation.
*/
static uint64_t pnv_xive_vst_addr_remote(PnvXive *xive, uint32_t type,
uint64_t vsd, uint8_t blk,
uint32_t idx)
{
const XiveVstInfo *info = &vst_infos[type];
uint64_t remote_addr = vsd & VSD_ADDRESS_MASK;
uint64_t vst_addr;
MemTxResult result;
if (type != VST_TSEL_VPDT) {
xive_error(xive, "VST: invalid access on remote VST %s %x/%x !?",
info->name, blk, idx);
return 0;
}
remote_addr |= idx << xive->pc_shift;
vst_addr = address_space_ldq_be(&address_space_memory, remote_addr,
MEMTXATTRS_UNSPECIFIED, &result);
if (result != MEMTX_OK) {
xive_error(xive, "VST: read failed at @0x%" HWADDR_PRIx
" for NVT %x/%x\n", remote_addr, blk, idx);
return 0;
}
return vst_addr;
}
static uint64_t pnv_xive_vst_addr(PnvXive *xive, uint32_t type, uint8_t blk,
uint32_t idx)
{
@ -225,9 +239,7 @@ static uint64_t pnv_xive_vst_addr(PnvXive *xive, uint32_t type, uint8_t blk,
/* Remote VST access */
if (GETFIELD(VSD_MODE, vsd) == VSD_MODE_FORWARD) {
xive = pnv_xive_get_remote(blk);
return xive ? pnv_xive_vst_addr(xive, type, blk, idx) : 0;
return pnv_xive_vst_addr_remote(xive, type, vsd, blk, idx);
}
if (VSD_INDIRECT & vsd) {
@ -242,12 +254,20 @@ static int pnv_xive_vst_read(PnvXive *xive, uint32_t type, uint8_t blk,
{
const XiveVstInfo *info = &vst_infos[type];
uint64_t addr = pnv_xive_vst_addr(xive, type, blk, idx);
MemTxResult result;
if (!addr) {
return -1;
}
cpu_physical_memory_read(addr, data, info->size);
result = address_space_read(&address_space_memory, addr,
MEMTXATTRS_UNSPECIFIED, data,
info->size);
if (result != MEMTX_OK) {
xive_error(xive, "VST: read failed at @0x%" HWADDR_PRIx
" for VST %s %x/%x\n", addr, info->name, blk, idx);
return -1;
}
return 0;
}
@ -258,16 +278,27 @@ static int pnv_xive_vst_write(PnvXive *xive, uint32_t type, uint8_t blk,
{
const XiveVstInfo *info = &vst_infos[type];
uint64_t addr = pnv_xive_vst_addr(xive, type, blk, idx);
MemTxResult result;
if (!addr) {
return -1;
}
if (word_number == XIVE_VST_WORD_ALL) {
cpu_physical_memory_write(addr, data, info->size);
result = address_space_write(&address_space_memory, addr,
MEMTXATTRS_UNSPECIFIED, data,
info->size);
} else {
cpu_physical_memory_write(addr + word_number * 4,
data + word_number * 4, 4);
result = address_space_write(&address_space_memory,
addr + word_number * 4,
MEMTXATTRS_UNSPECIFIED,
data + word_number * 4, 4);
}
if (result != MEMTX_OK) {
xive_error(xive, "VST: write failed at @0x%" HWADDR_PRIx
"for VST %s %x/%x\n", addr, info->name, blk, idx);
return -1;
}
return 0;
}
@ -275,12 +306,26 @@ static int pnv_xive_vst_write(PnvXive *xive, uint32_t type, uint8_t blk,
static int pnv_xive_get_end(XiveRouter *xrtr, uint8_t blk, uint32_t idx,
XiveEND *end)
{
PnvXive *xive = PNV_XIVE(xrtr);
if (pnv_xive_block_id(xive) != blk) {
xive_error(xive, "VST: END %x/%x is remote !?", blk, idx);
return -1;
}
return pnv_xive_vst_read(PNV_XIVE(xrtr), VST_TSEL_EQDT, blk, idx, end);
}
static int pnv_xive_write_end(XiveRouter *xrtr, uint8_t blk, uint32_t idx,
XiveEND *end, uint8_t word_number)
{
PnvXive *xive = PNV_XIVE(xrtr);
if (pnv_xive_block_id(xive) != blk) {
xive_error(xive, "VST: END %x/%x is remote !?", blk, idx);
return -1;
}
return pnv_xive_vst_write(PNV_XIVE(xrtr), VST_TSEL_EQDT, blk, idx, end,
word_number);
}
@ -1349,6 +1394,50 @@ static const MemoryRegionOps pnv_xive_ic_reg_ops = {
#define PNV_XIVE_SYNC_PUSH 0xf00 /* Sync push context */
#define PNV_XIVE_SYNC_VPC 0xf80 /* Sync remove VPC store */
static void pnv_xive_end_notify(XiveRouter *xrtr, XiveEAS *eas)
{
PnvXive *xive = PNV_XIVE(xrtr);
uint8_t end_blk = xive_get_field64(EAS_END_BLOCK, eas->w);
uint32_t end_idx = xive_get_field64(EAS_END_INDEX, eas->w);
uint32_t end_data = xive_get_field64(EAS_END_DATA, eas->w);
uint64_t end_vsd = xive->vsds[VST_TSEL_EQDT][end_blk];
switch (GETFIELD(VSD_MODE, end_vsd)) {
case VSD_MODE_EXCLUSIVE:
/* Perform the END notification on the local IC. */
xive_router_end_notify(xrtr, eas);
break;
case VSD_MODE_FORWARD: {
MemTxResult result;
uint64_t notif_port = end_vsd & VSD_ADDRESS_MASK;
uint64_t data = XIVE_TRIGGER_END | XIVE_TRIGGER_PQ |
be64_to_cpu(eas->w);
/* Forward the store on the remote IC notify page. */
address_space_stq_be(&address_space_memory, notif_port, data,
MEMTXATTRS_UNSPECIFIED, &result);
if (result != MEMTX_OK) {
xive_error(xive, "IC: Forward notif END %x/%x [%x] failed @%"
HWADDR_PRIx, end_blk, end_idx, end_data, notif_port);
return;
}
break;
}
case VSD_MODE_INVALID:
default:
/* Set FIR */
xive_error(xive, "IC: Invalid END VSD for block %x", end_blk);
return;
}
}
/*
* The notify page can either be used to receive trigger events from
* the HW controllers (PHB, PSI) or to reroute interrupts between
* Interrupt controllers.
*/
static void pnv_xive_ic_hw_trigger(PnvXive *xive, hwaddr addr, uint64_t val)
{
uint8_t blk;
@ -1357,8 +1446,8 @@ static void pnv_xive_ic_hw_trigger(PnvXive *xive, hwaddr addr, uint64_t val)
trace_pnv_xive_ic_hw_trigger(addr, val);
if (val & XIVE_TRIGGER_END) {
xive_error(xive, "IC: END trigger at @0x%"HWADDR_PRIx" data 0x%"PRIx64,
addr, val);
val = cpu_to_be64(val);
pnv_xive_end_notify(XIVE_ROUTER(xive), (XiveEAS *) &val);
return;
}
@ -1703,16 +1792,20 @@ static const MemoryRegionOps pnv_xive_vc_ops = {
};
/*
* Presenter Controller MMIO region. The Virtualization Controller
* updates the IPB in the NVT table when required. Not modeled.
* Presenter Controller MMIO region. Points to the NVT sets.
*
* HW implements all possible mem ops to the underlying NVT structure
* but QEMU does not need to be so precise. The model implementation
* simply returns the RAM address of the NVT structure which is then
* used by pnv_xive_vst_write/read to perform the RAM operation.
*/
static uint64_t pnv_xive_pc_read(void *opaque, hwaddr addr,
unsigned size)
static uint64_t pnv_xive_pc_read(void *opaque, hwaddr offset, unsigned size)
{
PnvXive *xive = PNV_XIVE(opaque);
uint32_t nvt_idx = offset >> xive->pc_shift;
uint8_t blk = pnv_xive_block_id(xive); /* TODO: VDT -> block xlate */
xive_error(xive, "PC: invalid read @%"HWADDR_PRIx, addr);
return -1;
return pnv_xive_vst_addr(xive, VST_TSEL_VPDT, blk, nvt_idx);
}
static void pnv_xive_pc_write(void *opaque, hwaddr addr,
@ -1898,6 +1991,7 @@ static void pnv_xive_realize(DeviceState *dev, Error **errp)
memory_region_init_io(&xive->ic_notify_mmio, OBJECT(dev),
&pnv_xive_ic_notify_ops,
xive, "xive-ic-notify", 1 << xive->ic_shift);
xive->ic_notify_mmio.disable_reentrancy_guard = true;
/* The Pervasive LSI trigger and EOI pages (not modeled) */
memory_region_init_io(&xive->ic_lsi_mmio, OBJECT(dev), &pnv_xive_ic_lsi_ops,
@ -1933,6 +2027,7 @@ static void pnv_xive_realize(DeviceState *dev, Error **errp)
/* Presenter Controller MMIO region (not modeled) */
memory_region_init_io(&xive->pc_mmio, OBJECT(xive), &pnv_xive_pc_ops, xive,
"xive-pc", PNV9_XIVE_PC_SIZE);
xive->pc_mmio.disable_reentrancy_guard = true;
/* Thread Interrupt Management Area (Direct) */
memory_region_init_io(&xive->tm_mmio, OBJECT(xive), &pnv_xive_tm_ops,
@ -1998,6 +2093,7 @@ static void pnv_xive_class_init(ObjectClass *klass, void *data)
xrc->get_nvt = pnv_xive_get_nvt;
xrc->write_nvt = pnv_xive_write_nvt;
xrc->get_block_id = pnv_xive_get_block_id;
xrc->end_notify = pnv_xive_end_notify;
xnc->notify = pnv_xive_notify;
xpc->match_nvt = pnv_xive_match_nvt;

27
hw/intc/pnv_xive2.c
View File

@ -240,12 +240,20 @@ static int pnv_xive2_vst_read(PnvXive2 *xive, uint32_t type, uint8_t blk,
{
const XiveVstInfo *info = &vst_infos[type];
uint64_t addr = pnv_xive2_vst_addr(xive, type, blk, idx);
MemTxResult result;
if (!addr) {
return -1;
}
cpu_physical_memory_read(addr, data, info->size);
result = address_space_read(&address_space_memory, addr,
MEMTXATTRS_UNSPECIFIED, data,
info->size);
if (result != MEMTX_OK) {
xive2_error(xive, "VST: read failed at @0x%" HWADDR_PRIx
" for VST %s %x/%x\n", addr, info->name, blk, idx);
return -1;
}
return 0;
}
@ -256,16 +264,27 @@ static int pnv_xive2_vst_write(PnvXive2 *xive, uint32_t type, uint8_t blk,
{
const XiveVstInfo *info = &vst_infos[type];
uint64_t addr = pnv_xive2_vst_addr(xive, type, blk, idx);
MemTxResult result;
if (!addr) {
return -1;
}
if (word_number == XIVE_VST_WORD_ALL) {
cpu_physical_memory_write(addr, data, info->size);
result = address_space_write(&address_space_memory, addr,
MEMTXATTRS_UNSPECIFIED, data,
info->size);
} else {
cpu_physical_memory_write(addr + word_number * 4,
data + word_number * 4, 4);
result = address_space_write(&address_space_memory,
addr + word_number * 4,
MEMTXATTRS_UNSPECIFIED,
data + word_number * 4, 4);
}
if (result != MEMTX_OK) {
xive2_error(xive, "VST: write failed at @0x%" HWADDR_PRIx
"for VST %s %x/%x\n", addr, info->name, blk, idx);
return -1;
}
return 0;
}

1
hw/intc/pnv_xive_regs.h
View File

@ -228,6 +228,7 @@
* VSD and is only meant to be used in indirect mode !
*/
#define VSD_MODE PPC_BITMASK(0, 1)
#define VSD_MODE_INVALID 0
#define VSD_MODE_SHARED 1
#define VSD_MODE_EXCLUSIVE 2
#define VSD_MODE_FORWARD 3

28
hw/intc/xive.c
View File

@ -1518,6 +1518,13 @@ static void xive_router_realize(DeviceState *dev, Error **errp)
assert(xrtr->xfb);
}
static void xive_router_end_notify_handler(XiveRouter *xrtr, XiveEAS *eas)
{
XiveRouterClass *xrc = XIVE_ROUTER_GET_CLASS(xrtr);
return xrc->end_notify(xrtr, eas);
}
/*
* Encode the HW CAM line in the block group mode format :
*
@ -1664,8 +1671,7 @@ static bool xive_router_end_es_notify(XiveRouter *xrtr, uint8_t end_blk,
* another chip. We don't model the PowerBus but the END trigger
* message has the same parameters than in the function below.
*/
static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk,
uint32_t end_idx, uint32_t end_data)
void xive_router_end_notify(XiveRouter *xrtr, XiveEAS *eas)
{
XiveEND end;
uint8_t priority;
@ -1675,6 +1681,10 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk,
XiveNVT nvt;
bool found;
uint8_t end_blk = xive_get_field64(EAS_END_BLOCK, eas->w);
uint32_t end_idx = xive_get_field64(EAS_END_INDEX, eas->w);
uint32_t end_data = xive_get_field64(EAS_END_DATA, eas->w);
/* END cache lookup */
if (xive_router_get_end(xrtr, end_blk, end_idx, &end)) {
qemu_log_mask(LOG_GUEST_ERROR, "XIVE: No END %x/%x\n", end_blk,
@ -1817,10 +1827,7 @@ do_escalation:
/*
* The END trigger becomes an Escalation trigger
*/
xive_router_end_notify(xrtr,
xive_get_field32(END_W4_ESC_END_BLOCK, end.w4),
xive_get_field32(END_W4_ESC_END_INDEX, end.w4),
xive_get_field32(END_W5_ESC_END_DATA, end.w5));
xive_router_end_notify_handler(xrtr, (XiveEAS *) &end.w4);
}
void xive_router_notify(XiveNotifier *xn, uint32_t lisn, bool pq_checked)
@ -1871,10 +1878,7 @@ void xive_router_notify(XiveNotifier *xn, uint32_t lisn, bool pq_checked)
/*
* The event trigger becomes an END trigger
*/
xive_router_end_notify(xrtr,
xive_get_field64(EAS_END_BLOCK, eas.w),
xive_get_field64(EAS_END_INDEX, eas.w),
xive_get_field64(EAS_END_DATA, eas.w));
xive_router_end_notify_handler(xrtr, &eas);
}
static Property xive_router_properties[] = {
@ -1887,12 +1891,16 @@ static void xive_router_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
XiveNotifierClass *xnc = XIVE_NOTIFIER_CLASS(klass);
XiveRouterClass *xrc = XIVE_ROUTER_CLASS(klass);
dc->desc = "XIVE Router Engine";
device_class_set_props(dc, xive_router_properties);
/* Parent is SysBusDeviceClass. No need to call its realize hook */
dc->realize = xive_router_realize;
xnc->notify = xive_router_notify;
/* By default, the router handles END triggers locally */
xrc->end_notify = xive_router_end_notify;
}
static const TypeInfo xive_router_info = {

2
hw/ppc/e500.c
View File

@ -712,7 +712,7 @@ static int ppce500_prep_device_tree(PPCE500MachineState *machine,
p->kernel_base = kernel_base;
p->kernel_size = kernel_size;
qemu_register_reset(ppce500_reset_device_tree, p);
qemu_register_reset_nosnapshotload(ppce500_reset_device_tree, p);
p->notifier.notify = ppce500_init_notify;
qemu_add_machine_init_done_notifier(&p->notifier);

1
hw/ppc/mac_oldworld.c
View File

@ -81,6 +81,7 @@ static void ppc_heathrow_reset(void *opaque)
{
PowerPCCPU *cpu = opaque;
cpu_ppc_tb_reset(&cpu->env);
cpu_reset(CPU(cpu));
}

1
hw/ppc/pegasos2.c
View File

@ -99,6 +99,7 @@ static void pegasos2_cpu_reset(void *opaque)
cpu->env.gpr[1] = 2 * VOF_STACK_SIZE - 0x20;
cpu->env.nip = 0x100;
}
cpu_ppc_tb_reset(&cpu->env);
}
static void pegasos2_pci_irq(void *opaque, int n, int level)

2
hw/ppc/pnv_core.c
View File

@ -61,6 +61,8 @@ static void pnv_core_cpu_reset(PnvCore *pc, PowerPCCPU *cpu)
hreg_compute_hflags(env);
ppc_maybe_interrupt(env);
cpu_ppc_tb_reset(env);
pcc->intc_reset(pc->chip, cpu);
}

243
hw/ppc/ppc.c
View File

@ -32,6 +32,7 @@
#include "qemu/main-loop.h"
#include "qemu/error-report.h"
#include "sysemu/kvm.h"
#include "sysemu/replay.h"
#include "sysemu/runstate.h"
#include "kvm_ppc.h"
#include "migration/vmstate.h"
@ -58,7 +59,9 @@ void ppc_set_irq(PowerPCCPU *cpu, int irq, int level)
if (old_pending != env->pending_interrupts) {
ppc_maybe_interrupt(env);
kvmppc_set_interrupt(cpu, irq, level);
if (kvm_enabled()) {
kvmppc_set_interrupt(cpu, irq, level);
}
}
trace_ppc_irq_set_exit(env, irq, level, env->pending_interrupts,
@ -482,10 +485,32 @@ void ppce500_set_mpic_proxy(bool enabled)
/*****************************************************************************/
/* PowerPC time base and decrementer emulation */
/*
* Conversion between QEMU_CLOCK_VIRTUAL ns and timebase (TB) ticks:
* TB ticks are arrived at by multiplying tb_freq then dividing by
* ns per second, and rounding down. TB ticks drive all clocks and
* timers in the target machine.
*
* Converting TB intervals to ns for the purpose of setting a
* QEMU_CLOCK_VIRTUAL timer should go the other way, but rounding
* up. Rounding down could cause the timer to fire before the TB
* value has been reached.
*/
static uint64_t ns_to_tb(uint32_t freq, int64_t clock)
{
return muldiv64(clock, freq, NANOSECONDS_PER_SECOND);
}
/* virtual clock in TB ticks, not adjusted by TB offset */
static int64_t tb_to_ns_round_up(uint32_t freq, uint64_t tb)
{
return muldiv64_round_up(tb, NANOSECONDS_PER_SECOND, freq);
}
uint64_t cpu_ppc_get_tb(ppc_tb_t *tb_env, uint64_t vmclk, int64_t tb_offset)
{
/* TB time in tb periods */
return muldiv64(vmclk, tb_env->tb_freq, NANOSECONDS_PER_SECOND) + tb_offset;
return ns_to_tb(tb_env->tb_freq, vmclk) + tb_offset;
}
uint64_t cpu_ppc_load_tbl (CPUPPCState *env)
@ -497,7 +522,8 @@ uint64_t cpu_ppc_load_tbl (CPUPPCState *env)
return env->spr[SPR_TBL];
}
tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
tb_env->tb_offset);
trace_ppc_tb_load(tb);
return tb;
@ -508,7 +534,8 @@ static inline uint32_t _cpu_ppc_load_tbu(CPUPPCState *env)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
tb_env->tb_offset);
trace_ppc_tb_load(tb);
return tb >> 32;
@ -526,8 +553,7 @@ uint32_t cpu_ppc_load_tbu (CPUPPCState *env)
static inline void cpu_ppc_store_tb(ppc_tb_t *tb_env, uint64_t vmclk,
int64_t *tb_offsetp, uint64_t value)
{
*tb_offsetp = value -
muldiv64(vmclk, tb_env->tb_freq, NANOSECONDS_PER_SECOND);
*tb_offsetp = value - ns_to_tb(tb_env->tb_freq, vmclk);
trace_ppc_tb_store(value, *tb_offsetp);
}
@ -565,7 +591,8 @@ uint64_t cpu_ppc_load_atbl (CPUPPCState *env)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
tb_env->atb_offset);
trace_ppc_tb_load(tb);
return tb;
@ -576,7 +603,8 @@ uint32_t cpu_ppc_load_atbu (CPUPPCState *env)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
tb_env->atb_offset);
trace_ppc_tb_load(tb);
return tb >> 32;
@ -683,64 +711,77 @@ bool ppc_decr_clear_on_delivery(CPUPPCState *env)
return ((tb_env->flags & flags) == PPC_DECR_UNDERFLOW_TRIGGERED);
}
static inline int64_t _cpu_ppc_load_decr(CPUPPCState *env, uint64_t next)
static inline int64_t __cpu_ppc_load_decr(CPUPPCState *env, int64_t now,
uint64_t next)
{
ppc_tb_t *tb_env = env->tb_env;
int64_t decr, diff;
uint64_t n;
int64_t decr;
diff = next - qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
if (diff >= 0) {
decr = muldiv64(diff, tb_env->decr_freq, NANOSECONDS_PER_SECOND);
} else if (tb_env->flags & PPC_TIMER_BOOKE) {
n = ns_to_tb(tb_env->decr_freq, now);
if (next > n && tb_env->flags & PPC_TIMER_BOOKE) {
decr = 0;
} else {
decr = -muldiv64(-diff, tb_env->decr_freq, NANOSECONDS_PER_SECOND);
} else {
decr = next - n;
}
trace_ppc_decr_load(decr);
return decr;
}
target_ulong cpu_ppc_load_decr(CPUPPCState *env)
static target_ulong _cpu_ppc_load_decr(CPUPPCState *env, int64_t now)
{
ppc_tb_t *tb_env = env->tb_env;
uint64_t decr;
if (kvm_enabled()) {
return env->spr[SPR_DECR];
}
decr = _cpu_ppc_load_decr(env, tb_env->decr_next);
decr = __cpu_ppc_load_decr(env, now, tb_env->decr_next);
/*
* If large decrementer is enabled then the decrementer is signed extened
* to 64 bits, otherwise it is a 32 bit value.
*/
if (env->spr[SPR_LPCR] & LPCR_LD) {
return decr;
PowerPCCPU *cpu = env_archcpu(env);
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
return sextract64(decr, 0, pcc->lrg_decr_bits);
}
return (uint32_t) decr;
}
target_ulong cpu_ppc_load_hdecr(CPUPPCState *env)
target_ulong cpu_ppc_load_decr(CPUPPCState *env)
{
if (kvm_enabled()) {
return env->spr[SPR_DECR];
} else {
return _cpu_ppc_load_decr(env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
}
}
static target_ulong _cpu_ppc_load_hdecr(CPUPPCState *env, int64_t now)
{
PowerPCCPU *cpu = env_archcpu(env);
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
ppc_tb_t *tb_env = env->tb_env;
uint64_t hdecr;
hdecr = _cpu_ppc_load_decr(env, tb_env->hdecr_next);
hdecr = __cpu_ppc_load_decr(env, now, tb_env->hdecr_next);
/*
* If we have a large decrementer (POWER9 or later) then hdecr is sign
* extended to 64 bits, otherwise it is 32 bits.
*/
if (pcc->lrg_decr_bits > 32) {
return hdecr;
return sextract64(hdecr, 0, pcc->lrg_decr_bits);
}
return (uint32_t) hdecr;
}
target_ulong cpu_ppc_load_hdecr(CPUPPCState *env)
{
return _cpu_ppc_load_hdecr(env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
}
uint64_t cpu_ppc_load_purr (CPUPPCState *env)
{
ppc_tb_t *tb_env = env->tb_env;
@ -785,7 +826,7 @@ static inline void cpu_ppc_hdecr_lower(PowerPCCPU *cpu)
ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 0);
}
static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t *nextp,
static void __cpu_ppc_store_decr(PowerPCCPU *cpu, int64_t now, uint64_t *nextp,
QEMUTimer *timer,
void (*raise_excp)(void *),
void (*lower_excp)(PowerPCCPU *),
@ -794,7 +835,7 @@ static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t *nextp,
{
CPUPPCState *env = &cpu->env;
ppc_tb_t *tb_env = env->tb_env;
uint64_t now, next;
uint64_t next;
int64_t signed_value;
int64_t signed_decr;
@ -806,10 +847,14 @@ static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t *nextp,
trace_ppc_decr_store(nr_bits, decr, value);
if (kvm_enabled()) {
/* KVM handles decrementer exceptions, we don't need our own timer */
return;
}
/*
* Calculate the next decrementer event and set a timer.
* decr_next is in timebase units to keep rounding simple. Note it is
* not adjusted by tb_offset because if TB changes via tb_offset changing,
* decrementer does not change, so not directly comparable with TB.
*/
next = ns_to_tb(tb_env->decr_freq, now) + value;
*nextp = next; /* nextp is in timebase units */
/*
* Going from 1 -> 0 or 0 -> -1 is the event to generate a DEC interrupt.
@ -832,21 +877,17 @@ static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t *nextp,
(*lower_excp)(cpu);
}
/* Calculate the next timer event */
now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
next = now + muldiv64(value, NANOSECONDS_PER_SECOND, tb_env->decr_freq);
*nextp = next;
/* Adjust timer */
timer_mod(timer, next);
timer_mod(timer, tb_to_ns_round_up(tb_env->decr_freq, next));
}
static inline void _cpu_ppc_store_decr(PowerPCCPU *cpu, target_ulong decr,
target_ulong value, int nr_bits)
static inline void _cpu_ppc_store_decr(PowerPCCPU *cpu, int64_t now,
target_ulong decr, target_ulong value,
int nr_bits)
{
ppc_tb_t *tb_env = cpu->env.tb_env;
__cpu_ppc_store_decr(cpu, &tb_env->decr_next, tb_env->decr_timer,
__cpu_ppc_store_decr(cpu, now, &tb_env->decr_next, tb_env->decr_timer,
tb_env->decr_timer->cb, &cpu_ppc_decr_lower,
tb_env->flags, decr, value, nr_bits);
}
@ -855,13 +896,22 @@ void cpu_ppc_store_decr(CPUPPCState *env, target_ulong value)
{
PowerPCCPU *cpu = env_archcpu(env);
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
int64_t now;
target_ulong decr;
int nr_bits = 32;
if (kvm_enabled()) {
/* KVM handles decrementer exceptions, we don't need our own timer */
return;
}
if (env->spr[SPR_LPCR] & LPCR_LD) {
nr_bits = pcc->lrg_decr_bits;
}
_cpu_ppc_store_decr(cpu, cpu_ppc_load_decr(env), value, nr_bits);
now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
decr = _cpu_ppc_load_decr(env, now);
_cpu_ppc_store_decr(cpu, now, decr, value, nr_bits);
}
static void cpu_ppc_decr_cb(void *opaque)
@ -871,14 +921,15 @@ static void cpu_ppc_decr_cb(void *opaque)
cpu_ppc_decr_excp(cpu);
}
static inline void _cpu_ppc_store_hdecr(PowerPCCPU *cpu, target_ulong hdecr,
target_ulong value, int nr_bits)
static inline void _cpu_ppc_store_hdecr(PowerPCCPU *cpu, int64_t now,
target_ulong hdecr, target_ulong value,
int nr_bits)
{
ppc_tb_t *tb_env = cpu->env.tb_env;
if (tb_env->hdecr_timer != NULL) {
/* HDECR (Book3S 64bit) is edge-based, not level like DECR */
__cpu_ppc_store_decr(cpu, &tb_env->hdecr_next, tb_env->hdecr_timer,
__cpu_ppc_store_decr(cpu, now, &tb_env->hdecr_next, tb_env->hdecr_timer,
tb_env->hdecr_timer->cb, &cpu_ppc_hdecr_lower,
PPC_DECR_UNDERFLOW_TRIGGERED,
hdecr, value, nr_bits);
@ -889,9 +940,12 @@ void cpu_ppc_store_hdecr(CPUPPCState *env, target_ulong value)
{
PowerPCCPU *cpu = env_archcpu(env);
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
int64_t now;
target_ulong hdecr;
_cpu_ppc_store_hdecr(cpu, cpu_ppc_load_hdecr(env), value,
pcc->lrg_decr_bits);
now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
hdecr = _cpu_ppc_load_hdecr(env, now);
_cpu_ppc_store_hdecr(cpu, now, hdecr, value, pcc->lrg_decr_bits);
}
static void cpu_ppc_hdecr_cb(void *opaque)
@ -901,29 +955,16 @@ static void cpu_ppc_hdecr_cb(void *opaque)
cpu_ppc_hdecr_excp(cpu);
}
void cpu_ppc_store_purr(CPUPPCState *env, uint64_t value)
static void _cpu_ppc_store_purr(CPUPPCState *env, int64_t now, uint64_t value)
{
ppc_tb_t *tb_env = env->tb_env;
cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
&tb_env->purr_offset, value);
cpu_ppc_store_tb(tb_env, now, &tb_env->purr_offset, value);
}
static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
void cpu_ppc_store_purr(CPUPPCState *env, uint64_t value)
{
CPUPPCState *env = opaque;
PowerPCCPU *cpu = env_archcpu(env);
ppc_tb_t *tb_env = env->tb_env;
tb_env->tb_freq = freq;
tb_env->decr_freq = freq;
/* There is a bug in Linux 2.4 kernels:
* if a decrementer exception is pending when it enables msr_ee at startup,
* it's not ready to handle it...
*/
_cpu_ppc_store_decr(cpu, 0xFFFFFFFF, 0xFFFFFFFF, 32);
_cpu_ppc_store_hdecr(cpu, 0xFFFFFFFF, 0xFFFFFFFF, 32);
cpu_ppc_store_purr(env, 0x0000000000000000ULL);
_cpu_ppc_store_purr(env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), value);
}
static void timebase_save(PPCTimebase *tb)
@ -936,8 +977,14 @@ static void timebase_save(PPCTimebase *tb)
return;
}
/* not used anymore, we keep it for compatibility */
tb->time_of_the_day_ns = qemu_clock_get_ns(QEMU_CLOCK_HOST);
if (replay_mode == REPLAY_MODE_NONE) {
/* not used anymore, we keep it for compatibility */
tb->time_of_the_day_ns = qemu_clock_get_ns(QEMU_CLOCK_HOST);
} else {
/* simpler for record-replay to avoid this event, compat not needed */
tb->time_of_the_day_ns = 0;
}
/*
* tb_offset is only expected to be changed by QEMU so
* there is no need to update it from KVM here
@ -1027,7 +1074,7 @@ const VMStateDescription vmstate_ppc_timebase = {
};
/* Set up (once) timebase frequency (in Hz) */
clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq)
void cpu_ppc_tb_init(CPUPPCState *env, uint32_t freq)
{
PowerPCCPU *cpu = env_archcpu(env);
ppc_tb_t *tb_env;
@ -1040,16 +1087,41 @@ clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq)
tb_env->flags |= PPC_DECR_UNDERFLOW_LEVEL;
}
/* Create new timer */
tb_env->decr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_decr_cb, cpu);
tb_env->decr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
&cpu_ppc_decr_cb, cpu);
if (env->has_hv_mode && !cpu->vhyp) {
tb_env->hdecr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_hdecr_cb,
cpu);
tb_env->hdecr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
&cpu_ppc_hdecr_cb, cpu);
} else {
tb_env->hdecr_timer = NULL;
}
cpu_ppc_set_tb_clk(env, freq);
return &cpu_ppc_set_tb_clk;
tb_env->tb_freq = freq;
tb_env->decr_freq = freq;
}
void cpu_ppc_tb_reset(CPUPPCState *env)
{
PowerPCCPU *cpu = env_archcpu(env);
ppc_tb_t *tb_env = env->tb_env;
timer_del(tb_env->decr_timer);
ppc_set_irq(cpu, PPC_INTERRUPT_DECR, 0);
tb_env->decr_next = 0;
if (tb_env->hdecr_timer != NULL) {
timer_del(tb_env->hdecr_timer);
ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 0);
tb_env->hdecr_next = 0;
}
/*
* There is a bug in Linux 2.4 kernels:
* if a decrementer exception is pending when it enables msr_ee at startup,
* it's not ready to handle it...
*/
cpu_ppc_store_decr(env, -1);
cpu_ppc_store_hdecr(env, -1);
cpu_ppc_store_purr(env, 0x0000000000000000ULL);
}
void cpu_ppc_tb_free(CPUPPCState *env)
@ -1125,9 +1197,7 @@ static void cpu_4xx_fit_cb (void *opaque)
/* Cannot occur, but makes gcc happy */
return;
}
next = now + muldiv64(next, NANOSECONDS_PER_SECOND, tb_env->tb_freq);
if (next == now)
next++;
next = now + tb_to_ns_round_up(tb_env->tb_freq, next);
timer_mod(ppc40x_timer->fit_timer, next);
env->spr[SPR_40x_TSR] |= 1 << 26;
if ((env->spr[SPR_40x_TCR] >> 23) & 0x1) {
@ -1153,14 +1223,15 @@ static void start_stop_pit (CPUPPCState *env, ppc_tb_t *tb_env, int is_excp)
} else {
trace_ppc4xx_pit_start(ppc40x_timer->pit_reload);
now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
next = now + muldiv64(ppc40x_timer->pit_reload,
NANOSECONDS_PER_SECOND, tb_env->decr_freq);
if (is_excp)
next += tb_env->decr_next - now;
if (next == now)
next++;
if (is_excp) {
tb_env->decr_next += ppc40x_timer->pit_reload;
} else {
tb_env->decr_next = ns_to_tb(tb_env->decr_freq, now)
+ ppc40x_timer->pit_reload;
}
next = tb_to_ns_round_up(tb_env->decr_freq, tb_env->decr_next);
timer_mod(tb_env->decr_timer, next);
tb_env->decr_next = next;
}
}
@ -1213,9 +1284,7 @@ static void cpu_4xx_wdt_cb (void *opaque)
/* Cannot occur, but makes gcc happy */
return;
}
next = now + muldiv64(next, NANOSECONDS_PER_SECOND, tb_env->decr_freq);
if (next == now)
next++;
next = now + tb_to_ns_round_up(tb_env->decr_freq, next);
trace_ppc4xx_wdt(env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
case 0x0:
@ -1465,5 +1534,7 @@ void ppc_irq_reset(PowerPCCPU *cpu)
CPUPPCState *env = &cpu->env;
env->irq_input_state = 0;
kvmppc_set_interrupt(cpu, PPC_INTERRUPT_EXT, 0);
if (kvm_enabled()) {
kvmppc_set_interrupt(cpu, PPC_INTERRUPT_EXT, 0);
}
}

1
hw/ppc/prep.c
View File

@ -67,6 +67,7 @@ static void ppc_prep_reset(void *opaque)
PowerPCCPU *cpu = opaque;
cpu_reset(CPU(cpu));
cpu_ppc_tb_reset(&cpu->env);
}

32
hw/ppc/spapr.c
View File

@ -1022,7 +1022,6 @@ static void spapr_dt_chosen(SpaprMachineState *spapr, void *fdt, bool reset)
{
MachineState *machine = MACHINE(spapr);
SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine);
uint8_t rng_seed[32];
int chosen;
_FDT(chosen = fdt_add_subnode(fdt, 0, "chosen"));
@ -1100,8 +1099,7 @@ static void spapr_dt_chosen(SpaprMachineState *spapr, void *fdt, bool reset)
spapr_dt_ov5_platform_support(spapr, fdt, chosen);
}
qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed));
_FDT(fdt_setprop(fdt, chosen, "rng-seed", rng_seed, sizeof(rng_seed)));
_FDT(fdt_setprop(fdt, chosen, "rng-seed", spapr->fdt_rng_seed, 32));
_FDT(spapr_dt_ovec(fdt, chosen, spapr->ov5_cas, "ibm,architecture-vec-5"));
}
@ -1322,6 +1320,22 @@ void spapr_set_all_lpcrs(target_ulong value, target_ulong mask)
}
}
/* May be used when the machine is not running */
void spapr_init_all_lpcrs(target_ulong value, target_ulong mask)
{
CPUState *cs;
CPU_FOREACH(cs) {
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *env = &cpu->env;
target_ulong lpcr;
lpcr = env->spr[SPR_LPCR];
lpcr &= ~(LPCR_HR | LPCR_UPRT);
ppc_store_lpcr(cpu, lpcr);
}
}
static bool spapr_get_pate(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu,
target_ulong lpid, ppc_v3_pate_t *entry)
{
@ -1583,7 +1597,7 @@ int spapr_reallocate_hpt(SpaprMachineState *spapr, int shift, Error **errp)
}
/* We're setting up a hash table, so that means we're not radix */
spapr->patb_entry = 0;
spapr_set_all_lpcrs(0, LPCR_HR | LPCR_UPRT);
spapr_init_all_lpcrs(0, LPCR_HR | LPCR_UPRT);
return 0;
}
@ -1638,6 +1652,14 @@ static void spapr_machine_reset(MachineState *machine, ShutdownCause reason)
void *fdt;
int rc;
if (reason != SHUTDOWN_CAUSE_SNAPSHOT_LOAD) {
/*
* Record-replay snapshot load must not consume random, this was
* already replayed from initial machine reset.
*/
qemu_guest_getrandom_nofail(spapr->fdt_rng_seed, 32);
}
pef_kvm_reset(machine->cgs, &error_fatal);
spapr_caps_apply(spapr);
@ -1661,7 +1683,7 @@ static void spapr_machine_reset(MachineState *machine, ShutdownCause reason)
spapr_ovec_cleanup(spapr->ov5_cas);
spapr->ov5_cas = spapr_ovec_new();
ppc_set_compat_all(spapr->max_compat_pvr, &error_fatal);
ppc_init_compat_all(spapr->max_compat_pvr, &error_fatal);
/*
* This is fixing some of the default configuration of the XIVE

2
hw/ppc/spapr_cpu_core.c
View File

@ -74,6 +74,8 @@ static void spapr_reset_vcpu(PowerPCCPU *cpu)
kvm_check_mmu(cpu, &error_fatal);
cpu_ppc_tb_reset(env);
spapr_irq_cpu_intc_reset(spapr, cpu);
}

57
hw/ppc/spapr_hcall.c
View File

@ -3,6 +3,7 @@
#include "qapi/error.h"
#include "sysemu/hw_accel.h"
#include "sysemu/runstate.h"
#include "sysemu/tcg.h"
#include "qemu/log.h"
#include "qemu/main-loop.h"
#include "qemu/module.h"
@ -789,6 +790,54 @@ static target_ulong h_logical_dcbf(PowerPCCPU *cpu, SpaprMachineState *spapr,
return H_SUCCESS;
}
static target_ulong h_set_mode_resource_set_ciabr(PowerPCCPU *cpu,
SpaprMachineState *spapr,
target_ulong mflags,
target_ulong value1,
target_ulong value2)
{
CPUPPCState *env = &cpu->env;
assert(tcg_enabled()); /* KVM will have handled this */
if (mflags) {
return H_UNSUPPORTED_FLAG;
}
if (value2) {
return H_P4;
}
if ((value1 & PPC_BITMASK(62, 63)) == 0x3) {
return H_P3;
}
ppc_store_ciabr(env, value1);
return H_SUCCESS;
}
static target_ulong h_set_mode_resource_set_dawr0(PowerPCCPU *cpu,
SpaprMachineState *spapr,
target_ulong mflags,
target_ulong value1,
target_ulong value2)
{
CPUPPCState *env = &cpu->env;
assert(tcg_enabled()); /* KVM will have handled this */
if (mflags) {
return H_UNSUPPORTED_FLAG;
}
if (value2 & PPC_BIT(61)) {
return H_P4;
}
ppc_store_dawr0(env, value1);
ppc_store_dawrx0(env, value2);
return H_SUCCESS;
}
static target_ulong h_set_mode_resource_le(PowerPCCPU *cpu,
SpaprMachineState *spapr,
target_ulong mflags,
@ -858,6 +907,14 @@ static target_ulong h_set_mode(PowerPCCPU *cpu, SpaprMachineState *spapr,
target_ulong ret = H_P2;
switch (resource) {
case H_SET_MODE_RESOURCE_SET_CIABR:
ret = h_set_mode_resource_set_ciabr(cpu, spapr, args[0], args[2],
args[3]);
break;
case H_SET_MODE_RESOURCE_SET_DAWR0:
ret = h_set_mode_resource_set_dawr0(cpu, spapr, args[0], args[2],
args[3]);
break;
case H_SET_MODE_RESOURCE_LE:
ret = h_set_mode_resource_le(cpu, spapr, args[0], args[2], args[3]);
break;

2
hw/ppc/vof.c
View File

@ -1024,6 +1024,8 @@ void vof_cleanup(Vof *vof)
}
vof->claimed = NULL;
vof->of_instances = NULL;
vof->of_instance_last = 0;
vof->claimed_base = 0;
}
void vof_build_dt(void *fdt, Vof *vof)

3
include/hw/ppc/ppc.h
View File

@ -54,7 +54,8 @@ struct ppc_tb_t {
*/
uint64_t cpu_ppc_get_tb(ppc_tb_t *tb_env, uint64_t vmclk, int64_t tb_offset);
clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq);
void cpu_ppc_tb_init(CPUPPCState *env, uint32_t freq);
void cpu_ppc_tb_reset(CPUPPCState *env);
void cpu_ppc_tb_free(CPUPPCState *env);
void cpu_ppc_hdecr_init(CPUPPCState *env);
void cpu_ppc_hdecr_exit(CPUPPCState *env);

2
include/hw/ppc/spapr.h
View File

@ -204,6 +204,7 @@ struct SpaprMachineState {
uint32_t fdt_size;
uint32_t fdt_initial_size;
void *fdt_blob;
uint8_t fdt_rng_seed[32];
long kernel_size;
bool kernel_le;
uint64_t kernel_addr;
@ -1012,6 +1013,7 @@ bool spapr_check_pagesize(SpaprMachineState *spapr, hwaddr pagesize,
#define SPAPR_OV5_XIVE_BOTH 0x80 /* Only to advertise on the platform */
void spapr_set_all_lpcrs(target_ulong value, target_ulong mask);
void spapr_init_all_lpcrs(target_ulong value, target_ulong mask);
hwaddr spapr_get_rtas_addr(void);
bool spapr_memory_hot_unplug_supported(SpaprMachineState *spapr);

2
include/hw/ppc/xive.h
View File

@ -401,6 +401,7 @@ struct XiveRouterClass {
int (*write_nvt)(XiveRouter *xrtr, uint8_t nvt_blk, uint32_t nvt_idx,
XiveNVT *nvt, uint8_t word_number);
uint8_t (*get_block_id)(XiveRouter *xrtr);
void (*end_notify)(XiveRouter *xrtr, XiveEAS *eas);
};
int xive_router_get_eas(XiveRouter *xrtr, uint8_t eas_blk, uint32_t eas_idx,
@ -414,6 +415,7 @@ int xive_router_get_nvt(XiveRouter *xrtr, uint8_t nvt_blk, uint32_t nvt_idx,
int xive_router_write_nvt(XiveRouter *xrtr, uint8_t nvt_blk, uint32_t nvt_idx,
XiveNVT *nvt, uint8_t word_number);
void xive_router_notify(XiveNotifier *xn, uint32_t lisn, bool pq_checked);
void xive_router_end_notify(XiveRouter *xrtr, XiveEAS *eas);
/*
* XIVE Presenter

21
include/qemu/host-utils.h
View File

@ -56,6 +56,11 @@ static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
return (__int128_t)a * b / c;
}
static inline uint64_t muldiv64_round_up(uint64_t a, uint32_t b, uint32_t c)
{
return ((__int128_t)a * b + c - 1) / c;
}
static inline uint64_t divu128(uint64_t *plow, uint64_t *phigh,
uint64_t divisor)
{
@ -83,7 +88,8 @@ void mulu64(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b);
uint64_t divu128(uint64_t *plow, uint64_t *phigh, uint64_t divisor);
int64_t divs128(uint64_t *plow, int64_t *phigh, int64_t divisor);
static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
static inline uint64_t muldiv64_rounding(uint64_t a, uint32_t b, uint32_t c,
bool round_up)
{
union {
uint64_t ll;
@ -99,12 +105,25 @@ static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
u.ll = a;
rl = (uint64_t)u.l.low * (uint64_t)b;
if (round_up) {
rl += c - 1;
}
rh = (uint64_t)u.l.high * (uint64_t)b;
rh += (rl >> 32);
res.l.high = rh / c;
res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
return res.ll;
}
static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
{
return muldiv64_rounding(a, b, c, false);
}
static inline uint64_t muldiv64_round_up(uint64_t a, uint32_t b, uint32_t c)
{
return muldiv64_rounding(a, b, c, true);
}
#endif
/**

19
target/ppc/compat.c
View File

@ -229,6 +229,25 @@ int ppc_set_compat_all(uint32_t compat_pvr, Error **errp)
return 0;
}
/* To be used when the machine is not running */
int ppc_init_compat_all(uint32_t compat_pvr, Error **errp)
{
CPUState *cs;
CPU_FOREACH(cs) {
PowerPCCPU *cpu = POWERPC_CPU(cs);
int ret;
ret = ppc_set_compat(cpu, compat_pvr, errp);
if (ret < 0) {
return ret;
}
}
return 0;
}
int ppc_compat_max_vthreads(PowerPCCPU *cpu)
{
const CompatInfo *compat = compat_by_pvr(cpu->compat_pvr);

87
target/ppc/cpu.c
View File

@ -59,6 +59,7 @@ void ppc_store_vscr(CPUPPCState *env, uint32_t vscr)
env->vscr_sat.u64[0] = vscr & (1u << VSCR_SAT);
env->vscr_sat.u64[1] = 0;
set_flush_to_zero((vscr >> VSCR_NJ) & 1, &env->vec_status);
set_flush_inputs_to_zero((vscr >> VSCR_NJ) & 1, &env->vec_status);
}
uint32_t ppc_get_vscr(CPUPPCState *env)
@ -102,6 +103,92 @@ void ppc_store_lpcr(PowerPCCPU *cpu, target_ulong val)
ppc_maybe_interrupt(env);
}
#if defined(TARGET_PPC64)
void ppc_update_ciabr(CPUPPCState *env)
{
CPUState *cs = env_cpu(env);
target_ulong ciabr = env->spr[SPR_CIABR];
target_ulong ciea, priv;
ciea = ciabr & PPC_BITMASK(0, 61);
priv = ciabr & PPC_BITMASK(62, 63);
if (env->ciabr_breakpoint) {
cpu_breakpoint_remove_by_ref(cs, env->ciabr_breakpoint);
env->ciabr_breakpoint = NULL;
}
if (priv) {
cpu_breakpoint_insert(cs, ciea, BP_CPU, &env->ciabr_breakpoint);
}
}
void ppc_store_ciabr(CPUPPCState *env, target_ulong val)
{
env->spr[SPR_CIABR] = val;
ppc_update_ciabr(env);
}
void ppc_update_daw0(CPUPPCState *env)
{
CPUState *cs = env_cpu(env);
target_ulong deaw = env->spr[SPR_DAWR0] & PPC_BITMASK(0, 60);
uint32_t dawrx = env->spr[SPR_DAWRX0];
int mrd = extract32(dawrx, PPC_BIT_NR(48), 54 - 48);
bool dw = extract32(dawrx, PPC_BIT_NR(57), 1);
bool dr = extract32(dawrx, PPC_BIT_NR(58), 1);
bool hv = extract32(dawrx, PPC_BIT_NR(61), 1);
bool sv = extract32(dawrx, PPC_BIT_NR(62), 1);
bool pr = extract32(dawrx, PPC_BIT_NR(62), 1);
vaddr len;
int flags;
if (env->dawr0_watchpoint) {
cpu_watchpoint_remove_by_ref(cs, env->dawr0_watchpoint);
env->dawr0_watchpoint = NULL;
}
if (!dr && !dw) {
return;
}
if (!hv && !sv && !pr) {
return;
}
len = (mrd + 1) * 8;
flags = BP_CPU | BP_STOP_BEFORE_ACCESS;
if (dr) {
flags |= BP_MEM_READ;
}
if (dw) {
flags |= BP_MEM_WRITE;
}
cpu_watchpoint_insert(cs, deaw, len, flags, &env->dawr0_watchpoint);
}
void ppc_store_dawr0(CPUPPCState *env, target_ulong val)
{
env->spr[SPR_DAWR0] = val;
ppc_update_daw0(env);
}
void ppc_store_dawrx0(CPUPPCState *env, uint32_t val)
{
int hrammc = extract32(val, PPC_BIT_NR(56), 1);
if (hrammc) {
/* This might be done with a second watchpoint at the xor of DEAW[0] */
qemu_log_mask(LOG_UNIMP, "%s: DAWRX0[HRAMMC] is unimplemented\n",
__func__);
}
env->spr[SPR_DAWRX0] = val;
ppc_update_daw0(env);
}
#endif
#endif
static inline void fpscr_set_rounding_mode(CPUPPCState *env)

12
target/ppc/cpu.h
View File

@ -1121,7 +1121,9 @@ struct CPUArchState {
target_ulong reserve_addr; /* Reservation address */
target_ulong reserve_length; /* Reservation larx op size (bytes) */
target_ulong reserve_val; /* Reservation value */
#if defined(TARGET_PPC64)
target_ulong reserve_val2;
#endif
/* These are used in supervisor mode only */
target_ulong msr; /* machine state register */
@ -1137,6 +1139,8 @@ struct CPUArchState {
/* MMU context, only relevant for full system emulation */
#if defined(TARGET_PPC64)
ppc_slb_t slb[MAX_SLB_ENTRIES]; /* PowerPC 64 SLB area */
struct CPUBreakpoint *ciabr_breakpoint;
struct CPUWatchpoint *dawr0_watchpoint;
#endif
target_ulong sr[32]; /* segment registers */
uint32_t nb_BATs; /* number of BATs */
@ -1403,6 +1407,11 @@ void ppc_translate_init(void);
#if !defined(CONFIG_USER_ONLY)
void ppc_store_sdr1(CPUPPCState *env, target_ulong value);
void ppc_store_lpcr(PowerPCCPU *cpu, target_ulong val);
void ppc_update_ciabr(CPUPPCState *env);
void ppc_store_ciabr(CPUPPCState *env, target_ulong value);
void ppc_update_daw0(CPUPPCState *env);
void ppc_store_dawr0(CPUPPCState *env, target_ulong value);
void ppc_store_dawrx0(CPUPPCState *env, uint32_t value);
#endif /* !defined(CONFIG_USER_ONLY) */
void ppc_store_msr(CPUPPCState *env, target_ulong value);
@ -1495,6 +1504,7 @@ int ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp);
#if !defined(CONFIG_USER_ONLY)
int ppc_set_compat_all(uint32_t compat_pvr, Error **errp);
int ppc_init_compat_all(uint32_t compat_pvr, Error **errp);
#endif
int ppc_compat_max_vthreads(PowerPCCPU *cpu);
void ppc_compat_add_property(Object *obj, const char *name,
@ -1897,7 +1907,9 @@ void ppc_compat_add_property(Object *obj, const char *name,
#define SPR_PSSCR (0x357)
#define SPR_440_INV0 (0x370)
#define SPR_440_INV1 (0x371)
#define SPR_TRIG1 (0x371)
#define SPR_440_INV2 (0x372)
#define SPR_TRIG2 (0x372)
#define SPR_440_INV3 (0x373)
#define SPR_440_ITV0 (0x374)
#define SPR_440_ITV1 (0x375)

21
target/ppc/cpu_init.c
View File

@ -5117,17 +5117,17 @@ static void register_book3s_207_dbg_sprs(CPUPPCState *env)
spr_register_kvm_hv(env, SPR_DAWR0, "DAWR0",
SPR_NOACCESS, SPR_NOACCESS,
SPR_NOACCESS, SPR_NOACCESS,
&spr_read_generic, &spr_write_generic,
&spr_read_generic, &spr_write_dawr0,
KVM_REG_PPC_DAWR, 0x00000000);
spr_register_kvm_hv(env, SPR_DAWRX0, "DAWRX0",
SPR_NOACCESS, SPR_NOACCESS,
SPR_NOACCESS, SPR_NOACCESS,
&spr_read_generic, &spr_write_generic32,
&spr_read_generic, &spr_write_dawrx0,
KVM_REG_PPC_DAWRX, 0x00000000);
spr_register_kvm_hv(env, SPR_CIABR, "CIABR",
SPR_NOACCESS, SPR_NOACCESS,
SPR_NOACCESS, SPR_NOACCESS,
&spr_read_generic, &spr_write_generic,
&spr_read_generic, &spr_write_ciabr,
KVM_REG_PPC_CIABR, 0x00000000);
}
@ -5660,6 +5660,16 @@ static void register_power_common_book4_sprs(CPUPPCState *env)
SPR_NOACCESS, SPR_NOACCESS,
&spr_read_tfmr, &spr_write_tfmr,
0x00000000);
spr_register_hv(env, SPR_TRIG1, "TRIG1",
SPR_NOACCESS, SPR_NOACCESS,
&spr_access_nop, &spr_write_generic,
&spr_access_nop, &spr_write_generic,
0x00000000);
spr_register_hv(env, SPR_TRIG2, "TRIG2",
SPR_NOACCESS, SPR_NOACCESS,
&spr_access_nop, &spr_write_generic,
&spr_access_nop, &spr_write_generic,
0x00000000);
#endif
}
@ -7149,6 +7159,8 @@ static void ppc_cpu_reset_hold(Object *obj)
env->nip = env->hreset_vector | env->excp_prefix;
if (tcg_enabled()) {
cpu_breakpoint_remove_all(s, BP_CPU);
cpu_watchpoint_remove_all(s, BP_CPU);
if (env->mmu_model != POWERPC_MMU_REAL) {
ppc_tlb_invalidate_all(env);
}
@ -7336,6 +7348,9 @@ static const struct TCGCPUOps ppc_tcg_ops = {
.cpu_exec_exit = ppc_cpu_exec_exit,
.do_unaligned_access = ppc_cpu_do_unaligned_access,
.do_transaction_failed = ppc_cpu_do_transaction_failed,
.debug_excp_handler = ppc_cpu_debug_excp_handler,
.debug_check_breakpoint = ppc_cpu_debug_check_breakpoint,
.debug_check_watchpoint = ppc_cpu_debug_check_watchpoint,
#endif /* !CONFIG_USER_ONLY */
};
#endif /* CONFIG_TCG */

111
target/ppc/excp_helper.c
View File

@ -843,6 +843,7 @@ static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
PPCVirtualHypervisorClass *vhc =
PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
vhc->hypercall(cpu->vhyp, cpu);
powerpc_reset_excp_state(cpu);
return;
}
@ -1014,6 +1015,7 @@ static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
PPCVirtualHypervisorClass *vhc =
PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
vhc->hypercall(cpu->vhyp, cpu);
powerpc_reset_excp_state(cpu);
return;
}
@ -1526,6 +1528,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
PPCVirtualHypervisorClass *vhc =
PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
vhc->hypercall(cpu->vhyp, cpu);
powerpc_reset_excp_state(cpu);
return;
}
if (env->insns_flags2 & PPC2_ISA310) {
@ -1571,9 +1574,11 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
}
}
break;
case POWERPC_EXCP_TRACE: /* Trace exception */
msr |= env->error_code;
/* fall through */
case POWERPC_EXCP_DSEG: /* Data segment exception */
case POWERPC_EXCP_ISEG: /* Instruction segment exception */
case POWERPC_EXCP_TRACE: /* Trace exception */
case POWERPC_EXCP_SDOOR: /* Doorbell interrupt */
case POWERPC_EXCP_PERFM: /* Performance monitor interrupt */
break;
@ -3168,6 +3173,18 @@ void helper_book3s_msgsndp(CPUPPCState *env, target_ulong rb)
}
#endif /* TARGET_PPC64 */
/* Single-step tracing */
void helper_book3s_trace(CPUPPCState *env, target_ulong prev_ip)
{
uint32_t error_code = 0;
if (env->insns_flags2 & PPC2_ISA207S) {
/* Load/store reporting, SRR1[35, 36] and SDAR, are not implemented. */
env->spr[SPR_POWER_SIAR] = prev_ip;
error_code = PPC_BIT(33);
}
raise_exception_err(env, POWERPC_EXCP_TRACE, error_code);
}
void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr)
@ -3243,5 +3260,97 @@ void ppc_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
cs->exception_index = POWERPC_EXCP_MCHECK;
cpu_loop_exit_restore(cs, retaddr);
}
void ppc_cpu_debug_excp_handler(CPUState *cs)
{
#if defined(TARGET_PPC64)
CPUPPCState *env = cs->env_ptr;
if (env->insns_flags2 & PPC2_ISA207S) {
if (cs->watchpoint_hit) {
if (cs->watchpoint_hit->flags & BP_CPU) {
env->spr[SPR_DAR] = cs->watchpoint_hit->hitaddr;
env->spr[SPR_DSISR] = PPC_BIT(41);
cs->watchpoint_hit = NULL;
raise_exception(env, POWERPC_EXCP_DSI);
}
cs->watchpoint_hit = NULL;
} else if (cpu_breakpoint_test(cs, env->nip, BP_CPU)) {
raise_exception_err(env, POWERPC_EXCP_TRACE,
PPC_BIT(33) | PPC_BIT(43));
}
}
#endif
}
bool ppc_cpu_debug_check_breakpoint(CPUState *cs)
{
#if defined(TARGET_PPC64)
CPUPPCState *env = cs->env_ptr;
if (env->insns_flags2 & PPC2_ISA207S) {
target_ulong priv;
priv = env->spr[SPR_CIABR] & PPC_BITMASK(62, 63);
switch (priv) {
case 0x1: /* problem */
return env->msr & ((target_ulong)1 << MSR_PR);
case 0x2: /* supervisor */
return (!(env->msr & ((target_ulong)1 << MSR_PR)) &&
!(env->msr & ((target_ulong)1 << MSR_HV)));
case 0x3: /* hypervisor */
return (!(env->msr & ((target_ulong)1 << MSR_PR)) &&
(env->msr & ((target_ulong)1 << MSR_HV)));
default:
g_assert_not_reached();
}
}
#endif
return false;
}
bool ppc_cpu_debug_check_watchpoint(CPUState *cs, CPUWatchpoint *wp)
{
#if defined(TARGET_PPC64)
CPUPPCState *env = cs->env_ptr;
if (env->insns_flags2 & PPC2_ISA207S) {
if (wp == env->dawr0_watchpoint) {
uint32_t dawrx = env->spr[SPR_DAWRX0];
bool wt = extract32(dawrx, PPC_BIT_NR(59), 1);
bool wti = extract32(dawrx, PPC_BIT_NR(60), 1);
bool hv = extract32(dawrx, PPC_BIT_NR(61), 1);
bool sv = extract32(dawrx, PPC_BIT_NR(62), 1);
bool pr = extract32(dawrx, PPC_BIT_NR(62), 1);
if ((env->msr & ((target_ulong)1 << MSR_PR)) && !pr) {
return false;
} else if ((env->msr & ((target_ulong)1 << MSR_HV)) && !hv) {
return false;
} else if (!sv) {
return false;
}
if (!wti) {
if (env->msr & ((target_ulong)1 << MSR_DR)) {
if (!wt) {
return false;
}
} else {
if (wt) {
return false;
}
}
}
return true;
}
}
#endif
return false;
}
#endif /* CONFIG_TCG */
#endif /* !CONFIG_USER_ONLY */

4
target/ppc/helper.h
View File

@ -25,6 +25,9 @@ DEF_HELPER_1(hrfid, void, env)
DEF_HELPER_2(rfebb, void, env, tl)
DEF_HELPER_2(store_lpcr, void, env, tl)
DEF_HELPER_2(store_pcr, void, env, tl)
DEF_HELPER_2(store_ciabr, void, env, tl)
DEF_HELPER_2(store_dawr0, void, env, tl)
DEF_HELPER_2(store_dawrx0, void, env, tl)
DEF_HELPER_2(store_mmcr0, void, env, tl)
DEF_HELPER_2(store_mmcr1, void, env, tl)
DEF_HELPER_3(store_pmc, void, env, i32, i64)
@ -32,6 +35,7 @@ DEF_HELPER_2(read_pmc, tl, env, i32)
DEF_HELPER_2(insns_inc, void, env, i32)
DEF_HELPER_1(handle_pmc5_overflow, void, env)
#endif
DEF_HELPER_2(book3s_trace, void, env, tl)
DEF_HELPER_1(check_tlb_flush_local, void, env)
DEF_HELPER_1(check_tlb_flush_global, void, env)
#endif

3
target/ppc/internal.h
View File

@ -301,6 +301,9 @@ void ppc_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
MMUAccessType access_type,
int mmu_idx, MemTxAttrs attrs,
MemTxResult response, uintptr_t retaddr);
void ppc_cpu_debug_excp_handler(CPUState *cs);
bool ppc_cpu_debug_check_breakpoint(CPUState *cs);
bool ppc_cpu_debug_check_watchpoint(CPUState *cs, CPUWatchpoint *wp);
#endif
FIELD(GER_MSK, XMSK, 0, 4)

2
target/ppc/kvm.c
View File

@ -1320,7 +1320,7 @@ int kvmppc_set_interrupt(PowerPCCPU *cpu, int irq, int level)
return 0;
}
if (!kvm_enabled() || !cap_interrupt_unset) {
if (!cap_interrupt_unset) {
return 0;
}

45
target/ppc/machine.c
View File

@ -9,6 +9,7 @@
#include "qapi/error.h"
#include "kvm_ppc.h"
#include "power8-pmu.h"
#include "sysemu/replay.h"
static void post_load_update_msr(CPUPPCState *env)
{
@ -208,6 +209,14 @@ static int cpu_pre_save(void *opaque)
/* Used to retain migration compatibility for pre 6.0 for 601 machines. */
env->hflags_compat_nmsr = 0;
if (tcg_enabled()) {
/*
* TCG does not maintain the DECR spr (unlike KVM) so have to save
* it here.
*/
env->spr[SPR_DECR] = cpu_ppc_load_decr(env);
}
return 0;
}
@ -313,6 +322,17 @@ static int cpu_post_load(void *opaque, int version_id)
post_load_update_msr(env);
if (tcg_enabled()) {
/* Re-set breaks based on regs */
#if defined(TARGET_PPC64)
ppc_update_ciabr(env);
ppc_update_daw0(env);
#endif
/*
* TCG needs to re-start the decrementer timer and/or raise the
* interrupt. This works for level-triggered decrementer. Edge
* triggered types (including HDEC) would need to carry more state.
*/
cpu_ppc_store_decr(env, env->spr[SPR_DECR]);
pmu_mmcr01_updated(env);
}
@ -670,6 +690,27 @@ static const VMStateDescription vmstate_compat = {
}
};
static bool reservation_needed(void *opaque)
{
return (replay_mode != REPLAY_MODE_NONE);
}
static const VMStateDescription vmstate_reservation = {
.name = "cpu/reservation",
.version_id = 1,
.minimum_version_id = 1,
.needed = reservation_needed,
.fields = (VMStateField[]) {
VMSTATE_UINTTL(env.reserve_addr, PowerPCCPU),
VMSTATE_UINTTL(env.reserve_length, PowerPCCPU),
VMSTATE_UINTTL(env.reserve_val, PowerPCCPU),
#if defined(TARGET_PPC64)
VMSTATE_UINTTL(env.reserve_val2, PowerPCCPU),
#endif
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_ppc_cpu = {
.name = "cpu",
.version_id = 5,
@ -691,8 +732,7 @@ const VMStateDescription vmstate_ppc_cpu = {
VMSTATE_UINTTL_ARRAY(env.spr, PowerPCCPU, 1024),
VMSTATE_UINT64(env.spe_acc, PowerPCCPU),
/* Reservation */
VMSTATE_UINTTL(env.reserve_addr, PowerPCCPU),
VMSTATE_UNUSED(sizeof(target_ulong)), /* was env.reserve_addr */
/* Supervisor mode architected state */
VMSTATE_UINTTL(env.msr, PowerPCCPU),
@ -721,6 +761,7 @@ const VMStateDescription vmstate_ppc_cpu = {
&vmstate_tlbemb,
&vmstate_tlbmas,
&vmstate_compat,
&vmstate_reservation,
NULL
}
};

15
target/ppc/misc_helper.c
View File

@ -199,6 +199,21 @@ void helper_store_pcr(CPUPPCState *env, target_ulong value)
env->spr[SPR_PCR] = value & pcc->pcr_mask;
}
void helper_store_ciabr(CPUPPCState *env, target_ulong value)
{
ppc_store_ciabr(env, value);
}
void helper_store_dawr0(CPUPPCState *env, target_ulong value)
{
ppc_store_dawr0(env, value);
}
void helper_store_dawrx0(CPUPPCState *env, target_ulong value)
{
ppc_store_dawrx0(env, value);
}
/*
* DPDES register is shared. Each bit reflects the state of the
* doorbell interrupt of a thread of the same core.

74
target/ppc/mmu-radix64.c
View File

@ -219,27 +219,25 @@ static bool ppc_radix64_check_prot(PowerPCCPU *cpu, MMUAccessType access_type,
return false;
}
static void ppc_radix64_set_rc(PowerPCCPU *cpu, MMUAccessType access_type,
uint64_t pte, hwaddr pte_addr, int *prot)
static int ppc_radix64_check_rc(MMUAccessType access_type, uint64_t pte)
{
CPUState *cs = CPU(cpu);
uint64_t npte;
switch (access_type) {
case MMU_DATA_STORE:
if (!(pte & R_PTE_C)) {
break;
}
/* fall through */
case MMU_INST_FETCH:
case MMU_DATA_LOAD:
if (!(pte & R_PTE_R)) {
break;
}
npte = pte | R_PTE_R; /* Always set reference bit */
if (access_type == MMU_DATA_STORE) { /* Store/Write */
npte |= R_PTE_C; /* Set change bit */
} else {
/*
* Treat the page as read-only for now, so that a later write
* will pass through this function again to set the C bit.
*/
*prot &= ~PAGE_WRITE;
/* R/C bits are already set appropriately for this access */
return 0;
}
if (pte ^ npte) { /* If pte has changed then write it back */
stq_phys(cs->as, pte_addr, npte);
}
return 1;
}
static bool ppc_radix64_is_valid_level(int level, int psize, uint64_t nls)
@ -380,7 +378,8 @@ static int ppc_radix64_partition_scoped_xlate(PowerPCCPU *cpu,
ppc_v3_pate_t pate,
hwaddr *h_raddr, int *h_prot,
int *h_page_size, bool pde_addr,
int mmu_idx, bool guest_visible)
int mmu_idx, uint64_t lpid,
bool guest_visible)
{
MMUAccessType access_type = orig_access_type;
int fault_cause = 0;
@ -418,7 +417,24 @@ static int ppc_radix64_partition_scoped_xlate(PowerPCCPU *cpu,
}
if (guest_visible) {
ppc_radix64_set_rc(cpu, access_type, pte, pte_addr, h_prot);
if (ppc_radix64_check_rc(access_type, pte)) {
/*
* Per ISA 3.1 Book III, 7.5.3 and 7.5.5, failure to set R/C during
* partition-scoped translation when effLPID = 0 results in normal
* (non-Hypervisor) Data and Instruction Storage Interrupts
* respectively.
*
* ISA 3.0 is ambiguous about this, but tests on POWER9 hardware
* seem to exhibit the same behavior.
*/
if (lpid > 0) {
ppc_radix64_raise_hsi(cpu, access_type, eaddr, g_raddr,
DSISR_ATOMIC_RC);
} else {
ppc_radix64_raise_si(cpu, access_type, eaddr, DSISR_ATOMIC_RC);
}
return 1;
}
}
return 0;
@ -447,7 +463,8 @@ static int ppc_radix64_process_scoped_xlate(PowerPCCPU *cpu,
vaddr eaddr, uint64_t pid,
ppc_v3_pate_t pate, hwaddr *g_raddr,
int *g_prot, int *g_page_size,
int mmu_idx, bool guest_visible)
int mmu_idx, uint64_t lpid,
bool guest_visible)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
@ -497,7 +514,7 @@ static int ppc_radix64_process_scoped_xlate(PowerPCCPU *cpu,
ret = ppc_radix64_partition_scoped_xlate(cpu, access_type, eaddr,
prtbe_addr, pate, &h_raddr,
&h_prot, &h_page_size, true,
5, guest_visible);
5, lpid, guest_visible);
if (ret) {
return ret;
}
@ -539,7 +556,8 @@ static int ppc_radix64_process_scoped_xlate(PowerPCCPU *cpu,
ret = ppc_radix64_partition_scoped_xlate(cpu, access_type, eaddr,
pte_addr, pate, &h_raddr,
&h_prot, &h_page_size,
true, 5, guest_visible);
true, 5, lpid,
guest_visible);
if (ret) {
return ret;
}
@ -580,7 +598,11 @@ static int ppc_radix64_process_scoped_xlate(PowerPCCPU *cpu,
}
if (guest_visible) {
ppc_radix64_set_rc(cpu, access_type, pte, pte_addr, g_prot);
/* R/C bits not appropriately set for access */
if (ppc_radix64_check_rc(access_type, pte)) {
ppc_radix64_raise_si(cpu, access_type, eaddr, DSISR_ATOMIC_RC);
return 1;
}
}
return 0;
@ -695,7 +717,8 @@ static bool ppc_radix64_xlate_impl(PowerPCCPU *cpu, vaddr eaddr,
if (relocation) {
int ret = ppc_radix64_process_scoped_xlate(cpu, access_type, eaddr, pid,
pate, &g_raddr, &prot,
&psize, mmu_idx, guest_visible);
&psize, mmu_idx, lpid,
guest_visible);
if (ret) {
return false;
}
@ -719,7 +742,8 @@ static bool ppc_radix64_xlate_impl(PowerPCCPU *cpu, vaddr eaddr,
ret = ppc_radix64_partition_scoped_xlate(cpu, access_type, eaddr,
g_raddr, pate, raddr,
&prot, &psize, false,
mmu_idx, guest_visible);
mmu_idx, lpid,
guest_visible);
if (ret) {
return false;
}

3
target/ppc/spr_common.h
View File

@ -159,6 +159,9 @@ void spr_read_mas73(DisasContext *ctx, int gprn, int sprn);
#ifdef TARGET_PPC64
void spr_read_cfar(DisasContext *ctx, int gprn, int sprn);
void spr_write_cfar(DisasContext *ctx, int sprn, int gprn);
void spr_write_ciabr(DisasContext *ctx, int sprn, int gprn);
void spr_write_dawr0(DisasContext *ctx, int sprn, int gprn);
void spr_write_dawrx0(DisasContext *ctx, int sprn, int gprn);
void spr_write_ureg(DisasContext *ctx, int sprn, int gprn);
void spr_read_purr(DisasContext *ctx, int gprn, int sprn);
void spr_write_purr(DisasContext *ctx, int sprn, int gprn);

64
target/ppc/translate.c
View File

@ -75,7 +75,9 @@ static TCGv cpu_xer, cpu_so, cpu_ov, cpu_ca, cpu_ov32, cpu_ca32;
static TCGv cpu_reserve;
static TCGv cpu_reserve_length;
static TCGv cpu_reserve_val;
#if defined(TARGET_PPC64)
static TCGv cpu_reserve_val2;
#endif
static TCGv cpu_fpscr;
static TCGv_i32 cpu_access_type;
@ -149,9 +151,11 @@ void ppc_translate_init(void)
cpu_reserve_val = tcg_global_mem_new(cpu_env,
offsetof(CPUPPCState, reserve_val),
"reserve_val");
#if defined(TARGET_PPC64)
cpu_reserve_val2 = tcg_global_mem_new(cpu_env,
offsetof(CPUPPCState, reserve_val2),
"reserve_val2");
#endif
cpu_fpscr = tcg_global_mem_new(cpu_env,
offsetof(CPUPPCState, fpscr), "fpscr");
@ -336,8 +340,9 @@ static void gen_ppc_maybe_interrupt(DisasContext *ctx)
* The exception can be either POWERPC_EXCP_TRACE (on most PowerPCs) or
* POWERPC_EXCP_DEBUG (on BookE).
*/
static uint32_t gen_prep_dbgex(DisasContext *ctx)
static void gen_debug_exception(DisasContext *ctx, bool rfi_type)
{
#if !defined(CONFIG_USER_ONLY)
if (ctx->flags & POWERPC_FLAG_DE) {
target_ulong dbsr = 0;
if (ctx->singlestep_enabled & CPU_SINGLE_STEP) {
@ -350,16 +355,18 @@ static uint32_t gen_prep_dbgex(DisasContext *ctx)
gen_load_spr(t0, SPR_BOOKE_DBSR);
tcg_gen_ori_tl(t0, t0, dbsr);
gen_store_spr(SPR_BOOKE_DBSR, t0);
return POWERPC_EXCP_DEBUG;
gen_helper_raise_exception(cpu_env,
tcg_constant_i32(POWERPC_EXCP_DEBUG));
ctx->base.is_jmp = DISAS_NORETURN;
} else {
return POWERPC_EXCP_TRACE;
if (!rfi_type) { /* BookS does not single step rfi type instructions */
TCGv t0 = tcg_temp_new();
tcg_gen_movi_tl(t0, ctx->cia);
gen_helper_book3s_trace(cpu_env, t0);
ctx->base.is_jmp = DISAS_NORETURN;
}
}
}
static void gen_debug_exception(DisasContext *ctx)
{
gen_helper_raise_exception(cpu_env, tcg_constant_i32(gen_prep_dbgex(ctx)));
ctx->base.is_jmp = DISAS_NORETURN;
#endif
}
static inline void gen_inval_exception(DisasContext *ctx, uint32_t error)
@ -554,8 +561,9 @@ void spr_write_lr(DisasContext *ctx, int sprn, int gprn)
tcg_gen_mov_tl(cpu_lr, cpu_gpr[gprn]);
}
/* CFAR */
#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
/* Debug facilities */
/* CFAR */
void spr_read_cfar(DisasContext *ctx, int gprn, int sprn)
{
tcg_gen_mov_tl(cpu_gpr[gprn], cpu_cfar);
@ -565,6 +573,26 @@ void spr_write_cfar(DisasContext *ctx, int sprn, int gprn)
{
tcg_gen_mov_tl(cpu_cfar, cpu_gpr[gprn]);
}
/* Breakpoint */
void spr_write_ciabr(DisasContext *ctx, int sprn, int gprn)
{
translator_io_start(&ctx->base);
gen_helper_store_ciabr(cpu_env, cpu_gpr[gprn]);
}
/* Watchpoint */
void spr_write_dawr0(DisasContext *ctx, int sprn, int gprn)
{
translator_io_start(&ctx->base);
gen_helper_store_dawr0(cpu_env, cpu_gpr[gprn]);
}
void spr_write_dawrx0(DisasContext *ctx, int sprn, int gprn)
{
translator_io_start(&ctx->base);
gen_helper_store_dawrx0(cpu_env, cpu_gpr[gprn]);
}
#endif /* defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY) */
/* CTR */
@ -4182,7 +4210,7 @@ static inline bool use_goto_tb(DisasContext *ctx, target_ulong dest)
static void gen_lookup_and_goto_ptr(DisasContext *ctx)
{
if (unlikely(ctx->singlestep_enabled)) {
gen_debug_exception(ctx);
gen_debug_exception(ctx, false);
} else {
/*
* tcg_gen_lookup_and_goto_ptr will exit the TB if
@ -7408,8 +7436,9 @@ static void ppc_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
}
/* Honor single stepping. */
if (unlikely(ctx->singlestep_enabled & CPU_SINGLE_STEP)
&& (nip <= 0x100 || nip > 0xf00)) {
if (unlikely(ctx->singlestep_enabled & CPU_SINGLE_STEP)) {
bool rfi_type = false;
switch (is_jmp) {
case DISAS_TOO_MANY:
case DISAS_EXIT_UPDATE:
@ -7418,12 +7447,19 @@ static void ppc_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
break;
case DISAS_EXIT:
case DISAS_CHAIN:
/*
* This is a heuristic, to put it kindly. The rfi class of
* instructions are among the few outside branches that change
* NIP without taking an interrupt. Single step trace interrupts
* do not fire on completion of these instructions.
*/
rfi_type = true;
break;
default:
g_assert_not_reached();
}
gen_debug_exception(ctx);
gen_debug_exception(ctx, rfi_type);
return;
}

16
target/ppc/translate/fixedpoint-impl.c.inc
View File

@ -71,7 +71,7 @@ static bool do_ldst_quad(DisasContext *ctx, arg_D *a, bool store, bool prefixed)
{
#if defined(TARGET_PPC64)
TCGv ea;
TCGv_i64 low_addr_gpr, high_addr_gpr;
TCGv_i64 lo, hi;
TCGv_i128 t16;
REQUIRE_INSNS_FLAGS(ctx, 64BX);
@ -94,21 +94,21 @@ static bool do_ldst_quad(DisasContext *ctx, arg_D *a, bool store, bool prefixed)
gen_set_access_type(ctx, ACCESS_INT);
ea = do_ea_calc(ctx, a->ra, tcg_constant_tl(a->si));
if (prefixed || !ctx->le_mode) {
low_addr_gpr = cpu_gpr[a->rt];
high_addr_gpr = cpu_gpr[a->rt + 1];
if (ctx->le_mode && prefixed) {
lo = cpu_gpr[a->rt];
hi = cpu_gpr[a->rt + 1];
} else {
low_addr_gpr = cpu_gpr[a->rt + 1];
high_addr_gpr = cpu_gpr[a->rt];
lo = cpu_gpr[a->rt + 1];
hi = cpu_gpr[a->rt];
}
t16 = tcg_temp_new_i128();
if (store) {
tcg_gen_concat_i64_i128(t16, low_addr_gpr, high_addr_gpr);
tcg_gen_concat_i64_i128(t16, lo, hi);
tcg_gen_qemu_st_i128(t16, ea, ctx->mem_idx, DEF_MEMOP(MO_128));
} else {
tcg_gen_qemu_ld_i128(t16, ea, ctx->mem_idx, DEF_MEMOP(MO_128));
tcg_gen_extr_i128_i64(low_addr_gpr, high_addr_gpr, t16);
tcg_gen_extr_i128_i64(lo, hi, t16);
}
#else
qemu_build_not_reached();

3
tests/avocado/replay_kernel.py
View File

@ -255,8 +255,7 @@ class ReplayKernelNormal(ReplayKernelBase):
kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
kernel_command_line = self.KERNEL_COMMON_COMMAND_LINE + 'console=hvc0'
# icount is not good enough for PPC64 for complete boot yet
console_pattern = 'Kernel command line: %s' % kernel_command_line
console_pattern = 'VFS: Cannot open root device'
self.run_rr(kernel_path, kernel_command_line, console_pattern)
def test_ppc64_powernv(self):

54
tests/avocado/reverse_debugging.py
View File

@ -150,16 +150,33 @@ class ReverseDebugging(LinuxKernelTest):
self.check_pc(g, addr)
logger.info('found position %x' % addr)
logger.info('seeking to the end (icount %s)' % (last_icount - 1))
vm.qmp('replay-break', icount=last_icount - 1)
# continue - will return after pausing
g.cmd(b'c', b'T02thread:01;')
# visit the recorded instruction in forward order
logger.info('stepping forward')
for addr in steps:
self.check_pc(g, addr)
self.gdb_step(g)
logger.info('found position %x' % addr)
# set breakpoints for the instructions just stepped over
logger.info('setting breakpoints')
for addr in steps:
# hardware breakpoint at addr with len=1
g.cmd(b'Z1,%x,1' % addr, b'OK')
# this may hit a breakpoint if first instructions are executed
# again
logger.info('continuing execution')
vm.qmp('replay-break', icount=last_icount - 1)
# continue - will return after pausing
# This could stop at the end and get a T02 return, or by
# re-executing one of the breakpoints and get a T05 return.
g.cmd(b'c')
if self.vm_get_icount(vm) == last_icount - 1:
logger.info('reached the end (icount %s)' % (last_icount - 1))
else:
logger.info('hit a breakpoint again at %x (icount %s)' %
(self.get_pc(g), self.vm_get_icount(vm)))
logger.info('running reverse continue to reach %x' % steps[-1])
# reverse continue - will return after stopping at the breakpoint
g.cmd(b'bc', b'T05thread:01;')
@ -216,3 +233,32 @@ class ReverseDebugging_AArch64(ReverseDebugging):
self.reverse_debugging(
args=('-kernel', kernel_path))
class ReverseDebugging_ppc64(ReverseDebugging):
"""
:avocado: tags=accel:tcg
"""
REG_PC = 0x40
# unidentified gitlab timeout problem
@skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab')
def test_ppc64_pseries(self):
"""
:avocado: tags=arch:ppc64
:avocado: tags=machine:pseries
"""
# SLOF branches back to its entry point, which causes this test
# to take the 'hit a breakpoint again' path. That's not a problem,
# just slightly different than the other machines.
self.endian_is_le = False
self.reverse_debugging()
@skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab')
def test_ppc64_powernv(self):
"""
:avocado: tags=arch:ppc64
:avocado: tags=machine:powernv
"""
self.endian_is_le = False
self.reverse_debugging()