static void close_peer_eventfds(IVShmemState *s, int posn)
{
int i, n;
if (!ivshmem_has_feature(s, IVSHMEM_IOEVENTFD)) {
return;
}
if (posn < 0 || posn >= s->nb_peers) {
error_report("invalid peer %d", posn);
return;
}
n = s->peers[posn].nb_eventfds;
memory_region_transaction_begin();
for (i = 0; i < n; i++) {
ivshmem_del_eventfd(s, posn, i);
}
memory_region_transaction_commit();
for (i = 0; i < n; i++) {
event_notifier_cleanup(&s->peers[posn].eventfds[i]);
}
g_free(s->peers[posn].eventfds);
s->peers[posn].nb_eventfds = 0;
}
/* SMRAM */
static void mch_update_smram(MCHPCIState *mch)
{
memory_region_transaction_begin();
smram_update(&mch->smram_region, mch->d.config[MCH_HOST_BRDIGE_SMRAM],
mch->smm_enabled);
memory_region_transaction_commit();
}
static void close_guest_eventfds(IVShmemState *s, int posn)
{
int i, guest_curr_max;
if (!ivshmem_has_feature(s, IVSHMEM_IOEVENTFD)) {
return;
}
if (posn < 0 || posn >= s->nb_peers) {
return;
}
guest_curr_max = s->peers[posn].nb_eventfds;
memory_region_transaction_begin();
for (i = 0; i < guest_curr_max; i++) {
ivshmem_del_eventfd(s, posn, i);
}
memory_region_transaction_commit();
for (i = 0; i < guest_curr_max; i++) {
event_notifier_cleanup(&s->peers[posn].eventfds[i]);
}
g_free(s->peers[posn].eventfds);
s->peers[posn].nb_eventfds = 0;
}
FDTMachineInfo *fdt_generic_create_machine(void *fdt, qemu_irq *cpu_irq)
{
char node_path[DT_PATH_LENGTH];
FDTMachineInfo *fdti = fdt_init_new_fdti(fdt);
fdti->irq_base = cpu_irq;
/* parse the device tree */
if (!qemu_devtree_get_root_node(fdt, node_path)) {
memory_region_transaction_begin();
fdt_init_set_opaque(fdti, node_path, NULL);
simple_bus_fdt_init(node_path, fdti);
while (qemu_co_enter_next(fdti->cq));
fdt_init_all_irqs(fdti);
memory_region_transaction_commit();
} else {
fprintf(stderr, "FDT: ERROR: cannot get root node from device tree %s\n"
, node_path);
}
DB_PRINT(0, "FDT: Device tree scan complete\n");
FDTMachineInfo *ret = g_malloc0(sizeof(*ret));
return fdti;
}
static void mch_set_smm(int smm, void *arg)
{
MCHPCIState *mch = arg;
memory_region_transaction_begin();
smram_set_smm(&mch->smm_enabled, smm, mch->d.config[MCH_HOST_BRDIGE_SMRAM],
&mch->smram_region);
memory_region_transaction_commit();
}
static void pci_bridge_update_mappings(PCIBridge *br)
{
/* Make updates atomic to: handle the case of one VCPU updating the bridge
* while another accesses an unaffected region. */
memory_region_transaction_begin();
pci_bridge_region_cleanup(br);
pci_bridge_region_init(br);
memory_region_transaction_commit();
}
/* SMRAM */
static void mch_update_smram(MCHPCIState *mch)
{
PCIDevice *pd = PCI_DEVICE(mch);
memory_region_transaction_begin();
smram_update(&mch->smram_region, pd->config[MCH_HOST_BRDIGE_SMRAM],
mch->smm_enabled);
memory_region_transaction_commit();
}
static void smbus_io_space_update(PIIX4PMState *s)
{
s->smb_io_base = le32_to_cpu(*(uint32_t *)(s->dev.config + 0x90));
s->smb_io_base &= 0xffc0;
memory_region_transaction_begin();
memory_region_set_enabled(&s->smb.io, s->dev.config[0xd2] & 1);
memory_region_set_address(&s->smb.io, s->smb_io_base);
memory_region_transaction_commit();
}
static void mch_set_smm(int smm, void *arg)
{
MCHPCIState *mch = arg;
PCIDevice *pd = PCI_DEVICE(mch);
memory_region_transaction_begin();
smram_set_smm(&mch->smm_enabled, smm, pd->config[MCH_HOST_BRDIGE_SMRAM],
&mch->smram_region);
memory_region_transaction_commit();
}
/* PAM */
static void mch_update_pam(MCHPCIState *mch)
{
int i;
memory_region_transaction_begin();
for (i = 0; i < 13; i++) {
pam_update(&mch->pam_regions[i], i,
mch->d.config[MCH_HOST_BRIDGE_PAM0 + ((i + 1) / 2)]);
}
memory_region_transaction_commit();
}
static inline void update_cpc_base(MIPSGCRState *gcr, uint64_t val)
{
if (is_cpc_connected(gcr)) {
gcr->cpc_base = val & GCR_CPC_BASE_MSK;
memory_region_transaction_begin();
memory_region_set_address(gcr->cpc_mr,
gcr->cpc_base & GCR_CPC_BASE_CPCBASE_MSK);
memory_region_set_enabled(gcr->cpc_mr,
gcr->cpc_base & GCR_CPC_BASE_CPCEN_MSK);
memory_region_transaction_commit();
}
}
/* PAM */
static void mch_update_pam(MCHPCIState *mch)
{
PCIDevice *pd = PCI_DEVICE(mch);
int i;
memory_region_transaction_begin();
for (i = 0; i < 13; i++) {
pam_update(&mch->pam_regions[i], i,
pd->config[MCH_HOST_BRIDGE_PAM0 + ((i + 1) / 2)]);
}
memory_region_transaction_commit();
}
void ich9_pm_iospace_update(ICH9LPCPMRegs *pm, uint32_t pm_io_base)
{
ICH9_DEBUG("to 0x%x\n", pm_io_base);
assert((pm_io_base & ICH9_PMIO_MASK) == 0);
pm->pm_io_base = pm_io_base;
memory_region_transaction_begin();
memory_region_set_enabled(&pm->io, pm->pm_io_base != 0);
memory_region_set_address(&pm->io, pm->pm_io_base);
memory_region_transaction_commit();
}
static void pm_io_space_update(PIIX4PMState *s)
{
PCIDevice *d = PCI_DEVICE(s);
s->io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x40));
s->io_base &= 0xffc0;
memory_region_transaction_begin();
memory_region_set_enabled(&s->io, d->config[0x80] & 1);
memory_region_set_address(&s->io, s->io_base);
memory_region_transaction_commit();
}
void pci_bridge_update_mappings(PCIBridge *br)
{
PCIBridgeWindows *w = br->windows;
/* Make updates atomic to: handle the case of one VCPU updating the bridge
* while another accesses an unaffected region. */
memory_region_transaction_begin();
pci_bridge_region_del(br, br->windows);
br->windows = pci_bridge_region_init(br);
memory_region_transaction_commit();
pci_bridge_region_cleanup(br, w);
}
static void pm_io_space_update(PIIX4PMState *s)
{
uint32_t pm_io_base;
pm_io_base = le32_to_cpu(*(uint32_t *)(s->dev.config + 0x40));
pm_io_base &= 0xffc0;
memory_region_transaction_begin();
memory_region_set_enabled(&s->io, s->dev.config[0x80] & 1);
memory_region_set_address(&s->io, pm_io_base);
memory_region_transaction_commit();
}
void pcie_host_mmcfg_update(PCIExpressHost *e,
int enable,
hwaddr addr,
uint32_t size)
{
memory_region_transaction_begin();
pcie_host_mmcfg_unmap(e);
if (enable) {
pcie_host_mmcfg_map(e, addr, size);
}
memory_region_transaction_commit();
}
static void itc_reconfigure(MIPSITUState *tag)
{
uint64_t *am = &tag->ITCAddressMap[0];
MemoryRegion *mr = &tag->storage_io;
hwaddr address = am[0] & ITC_AM0_BASE_ADDRESS_MASK;
uint64_t size = (1 << 10) + (am[1] & ITC_AM1_ADDR_MASK_MASK);
bool is_enabled = (am[0] & ITC_AM0_EN_MASK) != 0;
memory_region_transaction_begin();
if (!(size & (size - 1))) {
memory_region_set_size(mr, size);
}
memory_region_set_address(mr, address);
memory_region_set_enabled(mr, is_enabled);
memory_region_transaction_commit();
}
static void close_guest_eventfds(IVShmemState *s, int posn)
{
int i, guest_curr_max;
guest_curr_max = s->peers[posn].nb_eventfds;
memory_region_transaction_begin();
for (i = 0; i < guest_curr_max; i++) {
ivshmem_del_eventfd(s, posn, i);
}
memory_region_transaction_commit();
for (i = 0; i < guest_curr_max; i++) {
event_notifier_cleanup(&s->peers[posn].eventfds[i]);
}
g_free(s->peers[posn].eventfds);
s->peers[posn].nb_eventfds = 0;
}
static void close_peer_eventfds(IVShmemState *s, int posn)
{
int i, n;
assert(posn >= 0 && posn < s->nb_peers);
n = s->peers[posn].nb_eventfds;
if (ivshmem_has_feature(s, IVSHMEM_IOEVENTFD)) {
memory_region_transaction_begin();
for (i = 0; i < n; i++) {
ivshmem_del_eventfd(s, posn, i);
}
memory_region_transaction_commit();
}
for (i = 0; i < n; i++) {
event_notifier_cleanup(&s->peers[posn].eventfds[i]);
}
g_free(s->peers[posn].eventfds);
s->peers[posn].nb_eventfds = 0;
}
/*
* Dino can forward memory accesses from the CPU in the range between
* 0xf0800000 and 0xff000000 to the PCI bus.
*/
static void gsc_to_pci_forwarding(DinoState *s)
{
uint32_t io_addr_en, tmp;
int enabled, i;
tmp = extract32(s->io_control, 7, 2);
enabled = (tmp == 0x01);
io_addr_en = s->io_addr_en;
memory_region_transaction_begin();
for (i = 1; i < 31; i++) {
MemoryRegion *mem = &s->pci_mem_alias[i];
if (enabled && (io_addr_en & (1U << i))) {
if (!memory_region_is_mapped(mem)) {
uint32_t addr = 0xf0000000 + i * DINO_MEM_CHUNK_SIZE;
memory_region_add_subregion(get_system_memory(), addr, mem);
}
} else if (memory_region_is_mapped(mem)) {
memory_region_del_subregion(get_system_memory(), mem);
}
}
memory_region_transaction_commit();
}
/* SMRAM */
static void mch_update_smram(MCHPCIState *mch)
{
PCIDevice *pd = PCI_DEVICE(mch);
bool h_smrame = (pd->config[MCH_HOST_BRIDGE_ESMRAMC] & MCH_HOST_BRIDGE_ESMRAMC_H_SMRAME);
uint32_t tseg_size;
/* implement SMRAM.D_LCK */
if (pd->config[MCH_HOST_BRIDGE_SMRAM] & MCH_HOST_BRIDGE_SMRAM_D_LCK) {
pd->config[MCH_HOST_BRIDGE_SMRAM] &= ~MCH_HOST_BRIDGE_SMRAM_D_OPEN;
pd->wmask[MCH_HOST_BRIDGE_SMRAM] = MCH_HOST_BRIDGE_SMRAM_WMASK_LCK;
pd->wmask[MCH_HOST_BRIDGE_ESMRAMC] = MCH_HOST_BRIDGE_ESMRAMC_WMASK_LCK;
}
memory_region_transaction_begin();
if (pd->config[MCH_HOST_BRIDGE_SMRAM] & SMRAM_D_OPEN) {
/* Hide (!) low SMRAM if H_SMRAME = 1 */
memory_region_set_enabled(&mch->smram_region, h_smrame);
/* Show high SMRAM if H_SMRAME = 1 */
memory_region_set_enabled(&mch->open_high_smram, h_smrame);
} else {
/* Hide high SMRAM and low SMRAM */
memory_region_set_enabled(&mch->smram_region, true);
memory_region_set_enabled(&mch->open_high_smram, false);
}
if (pd->config[MCH_HOST_BRIDGE_SMRAM] & SMRAM_G_SMRAME) {
memory_region_set_enabled(&mch->low_smram, !h_smrame);
memory_region_set_enabled(&mch->high_smram, h_smrame);
} else {
memory_region_set_enabled(&mch->low_smram, false);
memory_region_set_enabled(&mch->high_smram, false);
}
if (pd->config[MCH_HOST_BRIDGE_ESMRAMC] & MCH_HOST_BRIDGE_ESMRAMC_T_EN) {
switch (pd->config[MCH_HOST_BRIDGE_ESMRAMC] &
MCH_HOST_BRIDGE_ESMRAMC_TSEG_SZ_MASK) {
case MCH_HOST_BRIDGE_ESMRAMC_TSEG_SZ_1MB:
tseg_size = 1024 * 1024;
break;
case MCH_HOST_BRIDGE_ESMRAMC_TSEG_SZ_2MB:
tseg_size = 1024 * 1024 * 2;
break;
case MCH_HOST_BRIDGE_ESMRAMC_TSEG_SZ_8MB:
tseg_size = 1024 * 1024 * 8;
break;
default:
tseg_size = 0;
break;
}
} else {
tseg_size = 0;
}
memory_region_del_subregion(mch->system_memory, &mch->tseg_blackhole);
memory_region_set_enabled(&mch->tseg_blackhole, tseg_size);
memory_region_set_size(&mch->tseg_blackhole, tseg_size);
memory_region_add_subregion_overlap(mch->system_memory,
mch->below_4g_mem_size - tseg_size,
&mch->tseg_blackhole, 1);
memory_region_set_enabled(&mch->tseg_window, tseg_size);
memory_region_set_size(&mch->tseg_window, tseg_size);
memory_region_set_address(&mch->tseg_window,
mch->below_4g_mem_size - tseg_size);
memory_region_set_alias_offset(&mch->tseg_window,
mch->below_4g_mem_size - tseg_size);
memory_region_transaction_commit();
}