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qemu/hw/ppc/spapr.c
Badari Pulavarty 9dbae97723 spapr_pci: Advertise MSI quota 
Hotplug of multiple disks fails due to MSI vector quota check.
Number of MSI vectors default to 8 allowing only 4 devices.
This happens on RHEL6.5 guest. RHEL7 and SLES11 guests fallback
to INTX.

One way to workaround the issue is to increase total MSIs,
so that MSI quota check allows us to hotplug multiple disks.

This sets the quota to the maximum number of interupts XICS has
which is 1024 now (XICS_IRQS). This moves XICS_IRQS from spapr.c
to xics.h for wider visibility.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
[aik: put XICS_IRQS=1024 instead of 64i, fixed endianness and size]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16 13:24:46 +02:00

1677 lines
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/*
* QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
*
* Copyright (c) 2004-2007 Fabrice Bellard
* Copyright (c) 2007 Jocelyn Mayer
* Copyright (c) 2010 David Gibson, IBM Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "sysemu/sysemu.h"
#include "hw/hw.h"
#include "hw/fw-path-provider.h"
#include "elf.h"
#include "net/net.h"
#include "sysemu/blockdev.h"
#include "sysemu/cpus.h"
#include "sysemu/kvm.h"
#include "kvm_ppc.h"
#include "mmu-hash64.h"
#include "qom/cpu.h"
#include "hw/boards.h"
#include "hw/ppc/ppc.h"
#include "hw/loader.h"
#include "hw/ppc/spapr.h"
#include "hw/ppc/spapr_vio.h"
#include "hw/pci-host/spapr.h"
#include "hw/ppc/xics.h"
#include "hw/pci/msi.h"
#include "hw/pci/pci.h"
#include "hw/scsi/scsi.h"
#include "hw/virtio/virtio-scsi.h"
#include "exec/address-spaces.h"
#include "hw/usb.h"
#include "qemu/config-file.h"
#include "qemu/error-report.h"
#include "trace.h"
#include <libfdt.h>
/* SLOF memory layout:
*
* SLOF raw image loaded at 0, copies its romfs right below the flat
* device-tree, then position SLOF itself 31M below that
*
* So we set FW_OVERHEAD to 40MB which should account for all of that
* and more
*
* We load our kernel at 4M, leaving space for SLOF initial image
*/
#define FDT_MAX_SIZE 0x40000
#define RTAS_MAX_SIZE 0x10000
#define FW_MAX_SIZE 0x400000
#define FW_FILE_NAME "slof.bin"
#define FW_OVERHEAD 0x2800000
#define KERNEL_LOAD_ADDR FW_MAX_SIZE
#define MIN_RMA_SLOF 128UL
#define TIMEBASE_FREQ 512000000ULL
#define MAX_CPUS 256
#define PHANDLE_XICP 0x00001111
#define HTAB_SIZE(spapr) (1ULL << ((spapr)->htab_shift))
typedef struct SPAPRMachine SPAPRMachine;
#define TYPE_SPAPR_MACHINE "spapr-machine"
#define SPAPR_MACHINE(obj) \
OBJECT_CHECK(SPAPRMachine, (obj), TYPE_SPAPR_MACHINE)
/**
* SPAPRMachine:
*/
struct SPAPRMachine {
/*< private >*/
MachineState parent_obj;
/*< public >*/
char *kvm_type;
};
sPAPREnvironment *spapr;
int spapr_allocate_irq(int hint, bool lsi)
{
int irq;
if (hint) {
irq = hint;
if (hint >= spapr->next_irq) {
spapr->next_irq = hint + 1;
}
/* FIXME: we should probably check for collisions somehow */
} else {
irq = spapr->next_irq++;
}
/* Configure irq type */
if (!xics_get_qirq(spapr->icp, irq)) {
return 0;
}
xics_set_irq_type(spapr->icp, irq, lsi);
return irq;
}
/*
* Allocate block of consequtive IRQs, returns a number of the first.
* If msi==true, aligns the first IRQ number to num.
*/
int spapr_allocate_irq_block(int num, bool lsi, bool msi)
{
int first = -1;
int i, hint = 0;
/*
* MSIMesage::data is used for storing VIRQ so
* it has to be aligned to num to support multiple
* MSI vectors. MSI-X is not affected by this.
* The hint is used for the first IRQ, the rest should
* be allocated continuously.
*/
if (msi) {
assert((num == 1) || (num == 2) || (num == 4) ||
(num == 8) || (num == 16) || (num == 32));
hint = (spapr->next_irq + num - 1) & ~(num - 1);
}
for (i = 0; i < num; ++i) {
int irq;
irq = spapr_allocate_irq(hint, lsi);
if (!irq) {
return -1;
}
if (0 == i) {
first = irq;
hint = 0;
}
/* If the above doesn't create a consecutive block then that's
* an internal bug */
assert(irq == (first + i));
}
return first;
}
static XICSState *try_create_xics(const char *type, int nr_servers,
int nr_irqs)
{
DeviceState *dev;
dev = qdev_create(NULL, type);
qdev_prop_set_uint32(dev, "nr_servers", nr_servers);
qdev_prop_set_uint32(dev, "nr_irqs", nr_irqs);
if (qdev_init(dev) < 0) {
return NULL;
}
return XICS_COMMON(dev);
}
static XICSState *xics_system_init(int nr_servers, int nr_irqs)
{
XICSState *icp = NULL;
if (kvm_enabled()) {
QemuOpts *machine_opts = qemu_get_machine_opts();
bool irqchip_allowed = qemu_opt_get_bool(machine_opts,
"kernel_irqchip", true);
bool irqchip_required = qemu_opt_get_bool(machine_opts,
"kernel_irqchip", false);
if (irqchip_allowed) {
icp = try_create_xics(TYPE_KVM_XICS, nr_servers, nr_irqs);
}
if (irqchip_required && !icp) {
perror("Failed to create in-kernel XICS\n");
abort();
}
}
if (!icp) {
icp = try_create_xics(TYPE_XICS, nr_servers, nr_irqs);
}
if (!icp) {
perror("Failed to create XICS\n");
abort();
}
return icp;
}
static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu,
int smt_threads)
{
int i, ret = 0;
uint32_t servers_prop[smt_threads];
uint32_t gservers_prop[smt_threads * 2];
int index = ppc_get_vcpu_dt_id(cpu);
if (cpu->cpu_version) {
ret = fdt_setprop(fdt, offset, "cpu-version",
&cpu->cpu_version, sizeof(cpu->cpu_version));
if (ret < 0) {
return ret;
}
}
/* Build interrupt servers and gservers properties */
for (i = 0; i < smt_threads; i++) {
servers_prop[i] = cpu_to_be32(index + i);
/* Hack, direct the group queues back to cpu 0 */
gservers_prop[i*2] = cpu_to_be32(index + i);
gservers_prop[i*2 + 1] = 0;
}
ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-server#s",
servers_prop, sizeof(servers_prop));
if (ret < 0) {
return ret;
}
ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-gserver#s",
gservers_prop, sizeof(gservers_prop));
return ret;
}
static int spapr_fixup_cpu_dt(void *fdt, sPAPREnvironment *spapr)
{
int ret = 0, offset, cpus_offset;
CPUState *cs;
char cpu_model[32];
int smt = kvmppc_smt_threads();
uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)};
CPU_FOREACH(cs) {
PowerPCCPU *cpu = POWERPC_CPU(cs);
DeviceClass *dc = DEVICE_GET_CLASS(cs);
int index = ppc_get_vcpu_dt_id(cpu);
uint32_t associativity[] = {cpu_to_be32(0x5),
cpu_to_be32(0x0),
cpu_to_be32(0x0),
cpu_to_be32(0x0),
cpu_to_be32(cs->numa_node),
cpu_to_be32(index)};
if ((index % smt) != 0) {
continue;
}
snprintf(cpu_model, 32, "%s@%x", dc->fw_name, index);
cpus_offset = fdt_path_offset(fdt, "/cpus");
if (cpus_offset < 0) {
cpus_offset = fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"),
"cpus");
if (cpus_offset < 0) {
return cpus_offset;
}
}
offset = fdt_subnode_offset(fdt, cpus_offset, cpu_model);
if (offset < 0) {
offset = fdt_add_subnode(fdt, cpus_offset, cpu_model);
if (offset < 0) {
return offset;
}
}
if (nb_numa_nodes > 1) {
ret = fdt_setprop(fdt, offset, "ibm,associativity", associativity,
sizeof(associativity));
if (ret < 0) {
return ret;
}
}
ret = fdt_setprop(fdt, offset, "ibm,pft-size",
pft_size_prop, sizeof(pft_size_prop));
if (ret < 0) {
return ret;
}
ret = spapr_fixup_cpu_smt_dt(fdt, offset, cpu,
ppc_get_compat_smt_threads(cpu));
if (ret < 0) {
return ret;
}
}
return ret;
}
static size_t create_page_sizes_prop(CPUPPCState *env, uint32_t *prop,
size_t maxsize)
{
size_t maxcells = maxsize / sizeof(uint32_t);
int i, j, count;
uint32_t *p = prop;
for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) {
struct ppc_one_seg_page_size *sps = &env->sps.sps[i];
if (!sps->page_shift) {
break;
}
for (count = 0; count < PPC_PAGE_SIZES_MAX_SZ; count++) {
if (sps->enc[count].page_shift == 0) {
break;
}
}
if ((p - prop) >= (maxcells - 3 - count * 2)) {
break;
}
*(p++) = cpu_to_be32(sps->page_shift);
*(p++) = cpu_to_be32(sps->slb_enc);
*(p++) = cpu_to_be32(count);
for (j = 0; j < count; j++) {
*(p++) = cpu_to_be32(sps->enc[j].page_shift);
*(p++) = cpu_to_be32(sps->enc[j].pte_enc);
}
}
return (p - prop) * sizeof(uint32_t);
}
#define _FDT(exp) \
do { \
int ret = (exp); \
if (ret < 0) { \
fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \
#exp, fdt_strerror(ret)); \
exit(1); \
} \
} while (0)
static void add_str(GString *s, const gchar *s1)
{
g_string_append_len(s, s1, strlen(s1) + 1);
}
static void *spapr_create_fdt_skel(hwaddr initrd_base,
hwaddr initrd_size,
hwaddr kernel_size,
bool little_endian,
const char *boot_device,
const char *kernel_cmdline,
uint32_t epow_irq)
{
void *fdt;
CPUState *cs;
uint32_t start_prop = cpu_to_be32(initrd_base);
uint32_t end_prop = cpu_to_be32(initrd_base + initrd_size);
GString *hypertas = g_string_sized_new(256);
GString *qemu_hypertas = g_string_sized_new(256);
uint32_t refpoints[] = {cpu_to_be32(0x4), cpu_to_be32(0x4)};
uint32_t interrupt_server_ranges_prop[] = {0, cpu_to_be32(smp_cpus)};
int smt = kvmppc_smt_threads();
unsigned char vec5[] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x80};
QemuOpts *opts = qemu_opts_find(qemu_find_opts("smp-opts"), NULL);
unsigned sockets = opts ? qemu_opt_get_number(opts, "sockets", 0) : 0;
uint32_t cpus_per_socket = sockets ? (smp_cpus / sockets) : 1;
add_str(hypertas, "hcall-pft");
add_str(hypertas, "hcall-term");
add_str(hypertas, "hcall-dabr");
add_str(hypertas, "hcall-interrupt");
add_str(hypertas, "hcall-tce");
add_str(hypertas, "hcall-vio");
add_str(hypertas, "hcall-splpar");
add_str(hypertas, "hcall-bulk");
add_str(hypertas, "hcall-set-mode");
add_str(qemu_hypertas, "hcall-memop1");
fdt = g_malloc0(FDT_MAX_SIZE);
_FDT((fdt_create(fdt, FDT_MAX_SIZE)));
if (kernel_size) {
_FDT((fdt_add_reservemap_entry(fdt, KERNEL_LOAD_ADDR, kernel_size)));
}
if (initrd_size) {
_FDT((fdt_add_reservemap_entry(fdt, initrd_base, initrd_size)));
}
_FDT((fdt_finish_reservemap(fdt)));
/* Root node */
_FDT((fdt_begin_node(fdt, "")));
_FDT((fdt_property_string(fdt, "device_type", "chrp")));
_FDT((fdt_property_string(fdt, "model", "IBM pSeries (emulated by qemu)")));
_FDT((fdt_property_string(fdt, "compatible", "qemu,pseries")));
_FDT((fdt_property_cell(fdt, "#address-cells", 0x2)));
_FDT((fdt_property_cell(fdt, "#size-cells", 0x2)));
/* /chosen */
_FDT((fdt_begin_node(fdt, "chosen")));
/* Set Form1_affinity */
_FDT((fdt_property(fdt, "ibm,architecture-vec-5", vec5, sizeof(vec5))));
_FDT((fdt_property_string(fdt, "bootargs", kernel_cmdline)));
_FDT((fdt_property(fdt, "linux,initrd-start",
&start_prop, sizeof(start_prop))));
_FDT((fdt_property(fdt, "linux,initrd-end",
&end_prop, sizeof(end_prop))));
if (kernel_size) {
uint64_t kprop[2] = { cpu_to_be64(KERNEL_LOAD_ADDR),
cpu_to_be64(kernel_size) };
_FDT((fdt_property(fdt, "qemu,boot-kernel", &kprop, sizeof(kprop))));
if (little_endian) {
_FDT((fdt_property(fdt, "qemu,boot-kernel-le", NULL, 0)));
}
}
if (boot_device) {
_FDT((fdt_property_string(fdt, "qemu,boot-device", boot_device)));
}
_FDT((fdt_property_cell(fdt, "qemu,graphic-width", graphic_width)));
_FDT((fdt_property_cell(fdt, "qemu,graphic-height", graphic_height)));
_FDT((fdt_property_cell(fdt, "qemu,graphic-depth", graphic_depth)));
_FDT((fdt_end_node(fdt)));
/* cpus */
_FDT((fdt_begin_node(fdt, "cpus")));
_FDT((fdt_property_cell(fdt, "#address-cells", 0x1)));
_FDT((fdt_property_cell(fdt, "#size-cells", 0x0)));
CPU_FOREACH(cs) {
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *env = &cpu->env;
DeviceClass *dc = DEVICE_GET_CLASS(cs);
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
int index = ppc_get_vcpu_dt_id(cpu);
char *nodename;
uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40),
0xffffffff, 0xffffffff};
uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() : TIMEBASE_FREQ;
uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000;
uint32_t page_sizes_prop[64];
size_t page_sizes_prop_size;
if ((index % smt) != 0) {
continue;
}
nodename = g_strdup_printf("%s@%x", dc->fw_name, index);
_FDT((fdt_begin_node(fdt, nodename)));
g_free(nodename);
_FDT((fdt_property_cell(fdt, "reg", index)));
_FDT((fdt_property_string(fdt, "device_type", "cpu")));
_FDT((fdt_property_cell(fdt, "cpu-version", env->spr[SPR_PVR])));
_FDT((fdt_property_cell(fdt, "d-cache-block-size",
env->dcache_line_size)));
_FDT((fdt_property_cell(fdt, "d-cache-line-size",
env->dcache_line_size)));
_FDT((fdt_property_cell(fdt, "i-cache-block-size",
env->icache_line_size)));
_FDT((fdt_property_cell(fdt, "i-cache-line-size",
env->icache_line_size)));
if (pcc->l1_dcache_size) {
_FDT((fdt_property_cell(fdt, "d-cache-size", pcc->l1_dcache_size)));
} else {
fprintf(stderr, "Warning: Unknown L1 dcache size for cpu\n");
}
if (pcc->l1_icache_size) {
_FDT((fdt_property_cell(fdt, "i-cache-size", pcc->l1_icache_size)));
} else {
fprintf(stderr, "Warning: Unknown L1 icache size for cpu\n");
}
_FDT((fdt_property_cell(fdt, "timebase-frequency", tbfreq)));
_FDT((fdt_property_cell(fdt, "clock-frequency", cpufreq)));
_FDT((fdt_property_cell(fdt, "ibm,slb-size", env->slb_nr)));
_FDT((fdt_property_string(fdt, "status", "okay")));
_FDT((fdt_property(fdt, "64-bit", NULL, 0)));
if (env->spr_cb[SPR_PURR].oea_read) {
_FDT((fdt_property(fdt, "ibm,purr", NULL, 0)));
}
if (env->mmu_model & POWERPC_MMU_1TSEG) {
_FDT((fdt_property(fdt, "ibm,processor-segment-sizes",
segs, sizeof(segs))));
}
/* Advertise VMX/VSX (vector extensions) if available
* 0 / no property == no vector extensions
* 1 == VMX / Altivec available
* 2 == VSX available */
if (env->insns_flags & PPC_ALTIVEC) {
uint32_t vmx = (env->insns_flags2 & PPC2_VSX) ? 2 : 1;
_FDT((fdt_property_cell(fdt, "ibm,vmx", vmx)));
}
/* Advertise DFP (Decimal Floating Point) if available
* 0 / no property == no DFP
* 1 == DFP available */
if (env->insns_flags2 & PPC2_DFP) {
_FDT((fdt_property_cell(fdt, "ibm,dfp", 1)));
}
page_sizes_prop_size = create_page_sizes_prop(env, page_sizes_prop,
sizeof(page_sizes_prop));
if (page_sizes_prop_size) {
_FDT((fdt_property(fdt, "ibm,segment-page-sizes",
page_sizes_prop, page_sizes_prop_size)));
}
_FDT((fdt_property_cell(fdt, "ibm,chip-id",
cs->cpu_index / cpus_per_socket)));
_FDT((fdt_end_node(fdt)));
}
_FDT((fdt_end_node(fdt)));
/* RTAS */
_FDT((fdt_begin_node(fdt, "rtas")));
if (!kvm_enabled() || kvmppc_spapr_use_multitce()) {
add_str(hypertas, "hcall-multi-tce");
}
_FDT((fdt_property(fdt, "ibm,hypertas-functions", hypertas->str,
hypertas->len)));
g_string_free(hypertas, TRUE);
_FDT((fdt_property(fdt, "qemu,hypertas-functions", qemu_hypertas->str,
qemu_hypertas->len)));
g_string_free(qemu_hypertas, TRUE);
_FDT((fdt_property(fdt, "ibm,associativity-reference-points",
refpoints, sizeof(refpoints))));
_FDT((fdt_property_cell(fdt, "rtas-error-log-max", RTAS_ERROR_LOG_MAX)));
_FDT((fdt_end_node(fdt)));
/* interrupt controller */
_FDT((fdt_begin_node(fdt, "interrupt-controller")));
_FDT((fdt_property_string(fdt, "device_type",
"PowerPC-External-Interrupt-Presentation")));
_FDT((fdt_property_string(fdt, "compatible", "IBM,ppc-xicp")));
_FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
_FDT((fdt_property(fdt, "ibm,interrupt-server-ranges",
interrupt_server_ranges_prop,
sizeof(interrupt_server_ranges_prop))));
_FDT((fdt_property_cell(fdt, "#interrupt-cells", 2)));
_FDT((fdt_property_cell(fdt, "linux,phandle", PHANDLE_XICP)));
_FDT((fdt_property_cell(fdt, "phandle", PHANDLE_XICP)));
_FDT((fdt_end_node(fdt)));
/* vdevice */
_FDT((fdt_begin_node(fdt, "vdevice")));
_FDT((fdt_property_string(fdt, "device_type", "vdevice")));
_FDT((fdt_property_string(fdt, "compatible", "IBM,vdevice")));
_FDT((fdt_property_cell(fdt, "#address-cells", 0x1)));
_FDT((fdt_property_cell(fdt, "#size-cells", 0x0)));
_FDT((fdt_property_cell(fdt, "#interrupt-cells", 0x2)));
_FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
_FDT((fdt_end_node(fdt)));
/* event-sources */
spapr_events_fdt_skel(fdt, epow_irq);
/* /hypervisor node */
if (kvm_enabled()) {
uint8_t hypercall[16];
/* indicate KVM hypercall interface */
_FDT((fdt_begin_node(fdt, "hypervisor")));
_FDT((fdt_property_string(fdt, "compatible", "linux,kvm")));
if (kvmppc_has_cap_fixup_hcalls()) {
/*
* Older KVM versions with older guest kernels were broken with the
* magic page, don't allow the guest to map it.
*/
kvmppc_get_hypercall(first_cpu->env_ptr, hypercall,
sizeof(hypercall));
_FDT((fdt_property(fdt, "hcall-instructions", hypercall,
sizeof(hypercall))));
}
_FDT((fdt_end_node(fdt)));
}
_FDT((fdt_end_node(fdt))); /* close root node */
_FDT((fdt_finish(fdt)));
return fdt;
}
int spapr_h_cas_compose_response(target_ulong addr, target_ulong size)
{
void *fdt, *fdt_skel;
sPAPRDeviceTreeUpdateHeader hdr = { .version_id = 1 };
size -= sizeof(hdr);
/* Create sceleton */
fdt_skel = g_malloc0(size);
_FDT((fdt_create(fdt_skel, size)));
_FDT((fdt_begin_node(fdt_skel, "")));
_FDT((fdt_end_node(fdt_skel)));
_FDT((fdt_finish(fdt_skel)));
fdt = g_malloc0(size);
_FDT((fdt_open_into(fdt_skel, fdt, size)));
g_free(fdt_skel);
/* Fix skeleton up */
_FDT((spapr_fixup_cpu_dt(fdt, spapr)));
/* Pack resulting tree */
_FDT((fdt_pack(fdt)));
if (fdt_totalsize(fdt) + sizeof(hdr) > size) {
trace_spapr_cas_failed(size);
return -1;
}
cpu_physical_memory_write(addr, &hdr, sizeof(hdr));
cpu_physical_memory_write(addr + sizeof(hdr), fdt, fdt_totalsize(fdt));
trace_spapr_cas_continue(fdt_totalsize(fdt) + sizeof(hdr));
g_free(fdt);
return 0;
}
static int spapr_populate_memory(sPAPREnvironment *spapr, void *fdt)
{
uint32_t associativity[] = {cpu_to_be32(0x4), cpu_to_be32(0x0),
cpu_to_be32(0x0), cpu_to_be32(0x0),
cpu_to_be32(0x0)};
char mem_name[32];
hwaddr node0_size, mem_start, node_size;
uint64_t mem_reg_property[2];
int i, off;
/* memory node(s) */
if (nb_numa_nodes > 1 && node_mem[0] < ram_size) {
node0_size = node_mem[0];
} else {
node0_size = ram_size;
}
/* RMA */
mem_reg_property[0] = 0;
mem_reg_property[1] = cpu_to_be64(spapr->rma_size);
off = fdt_add_subnode(fdt, 0, "memory@0");
_FDT(off);
_FDT((fdt_setprop_string(fdt, off, "device_type", "memory")));
_FDT((fdt_setprop(fdt, off, "reg", mem_reg_property,
sizeof(mem_reg_property))));
_FDT((fdt_setprop(fdt, off, "ibm,associativity", associativity,
sizeof(associativity))));
/* RAM: Node 0 */
if (node0_size > spapr->rma_size) {
mem_reg_property[0] = cpu_to_be64(spapr->rma_size);
mem_reg_property[1] = cpu_to_be64(node0_size - spapr->rma_size);
sprintf(mem_name, "memory@" TARGET_FMT_lx, spapr->rma_size);
off = fdt_add_subnode(fdt, 0, mem_name);
_FDT(off);
_FDT((fdt_setprop_string(fdt, off, "device_type", "memory")));
_FDT((fdt_setprop(fdt, off, "reg", mem_reg_property,
sizeof(mem_reg_property))));
_FDT((fdt_setprop(fdt, off, "ibm,associativity", associativity,
sizeof(associativity))));
}
/* RAM: Node 1 and beyond */
mem_start = node0_size;
for (i = 1; i < nb_numa_nodes; i++) {
mem_reg_property[0] = cpu_to_be64(mem_start);
if (mem_start >= ram_size) {
node_size = 0;
} else {
node_size = node_mem[i];
if (node_size > ram_size - mem_start) {
node_size = ram_size - mem_start;
}
}
mem_reg_property[1] = cpu_to_be64(node_size);
associativity[3] = associativity[4] = cpu_to_be32(i);
sprintf(mem_name, "memory@" TARGET_FMT_lx, mem_start);
off = fdt_add_subnode(fdt, 0, mem_name);
_FDT(off);
_FDT((fdt_setprop_string(fdt, off, "device_type", "memory")));
_FDT((fdt_setprop(fdt, off, "reg", mem_reg_property,
sizeof(mem_reg_property))));
_FDT((fdt_setprop(fdt, off, "ibm,associativity", associativity,
sizeof(associativity))));
mem_start += node_size;
}
return 0;
}
static void spapr_finalize_fdt(sPAPREnvironment *spapr,
hwaddr fdt_addr,
hwaddr rtas_addr,
hwaddr rtas_size)
{
int ret, i;
size_t cb = 0;
char *bootlist;
void *fdt;
sPAPRPHBState *phb;
fdt = g_malloc(FDT_MAX_SIZE);
/* open out the base tree into a temp buffer for the final tweaks */
_FDT((fdt_open_into(spapr->fdt_skel, fdt, FDT_MAX_SIZE)));
ret = spapr_populate_memory(spapr, fdt);
if (ret < 0) {
fprintf(stderr, "couldn't setup memory nodes in fdt\n");
exit(1);
}
ret = spapr_populate_vdevice(spapr->vio_bus, fdt);
if (ret < 0) {
fprintf(stderr, "couldn't setup vio devices in fdt\n");
exit(1);
}
QLIST_FOREACH(phb, &spapr->phbs, list) {
ret = spapr_populate_pci_dt(phb, PHANDLE_XICP, fdt);
}
if (ret < 0) {
fprintf(stderr, "couldn't setup PCI devices in fdt\n");
exit(1);
}
/* RTAS */
ret = spapr_rtas_device_tree_setup(fdt, rtas_addr, rtas_size);
if (ret < 0) {
fprintf(stderr, "Couldn't set up RTAS device tree properties\n");
}
/* Advertise NUMA via ibm,associativity */
ret = spapr_fixup_cpu_dt(fdt, spapr);
if (ret < 0) {
fprintf(stderr, "Couldn't finalize CPU device tree properties\n");
}
bootlist = get_boot_devices_list(&cb, true);
if (cb && bootlist) {
int offset = fdt_path_offset(fdt, "/chosen");
if (offset < 0) {
exit(1);
}
for (i = 0; i < cb; i++) {
if (bootlist[i] == '\n') {
bootlist[i] = ' ';
}
}
ret = fdt_setprop_string(fdt, offset, "qemu,boot-list", bootlist);
}
if (!spapr->has_graphics) {
spapr_populate_chosen_stdout(fdt, spapr->vio_bus);
}
_FDT((fdt_pack(fdt)));
if (fdt_totalsize(fdt) > FDT_MAX_SIZE) {
hw_error("FDT too big ! 0x%x bytes (max is 0x%x)\n",
fdt_totalsize(fdt), FDT_MAX_SIZE);
exit(1);
}
cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt));
g_free(fdt);
}
static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
{
return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR;
}
static void emulate_spapr_hypercall(PowerPCCPU *cpu)
{
CPUPPCState *env = &cpu->env;
if (msr_pr) {
hcall_dprintf("Hypercall made with MSR[PR]=1\n");
env->gpr[3] = H_PRIVILEGE;
} else {
env->gpr[3] = spapr_hypercall(cpu, env->gpr[3], &env->gpr[4]);
}
}
static void spapr_reset_htab(sPAPREnvironment *spapr)
{
long shift;
/* allocate hash page table. For now we always make this 16mb,
* later we should probably make it scale to the size of guest
* RAM */
shift = kvmppc_reset_htab(spapr->htab_shift);
if (shift > 0) {
/* Kernel handles htab, we don't need to allocate one */
spapr->htab_shift = shift;
kvmppc_kern_htab = true;
} else {
if (!spapr->htab) {
/* Allocate an htab if we don't yet have one */
spapr->htab = qemu_memalign(HTAB_SIZE(spapr), HTAB_SIZE(spapr));
}
/* And clear it */
memset(spapr->htab, 0, HTAB_SIZE(spapr));
}
/* Update the RMA size if necessary */
if (spapr->vrma_adjust) {
hwaddr node0_size = (nb_numa_nodes > 1) ? node_mem[0] : ram_size;
spapr->rma_size = kvmppc_rma_size(node0_size, spapr->htab_shift);
}
}
static void ppc_spapr_reset(void)
{
PowerPCCPU *first_ppc_cpu;
/* Reset the hash table & recalc the RMA */
spapr_reset_htab(spapr);
qemu_devices_reset();
/* Load the fdt */
spapr_finalize_fdt(spapr, spapr->fdt_addr, spapr->rtas_addr,
spapr->rtas_size);
/* Set up the entry state */
first_ppc_cpu = POWERPC_CPU(first_cpu);
first_ppc_cpu->env.gpr[3] = spapr->fdt_addr;
first_ppc_cpu->env.gpr[5] = 0;
first_cpu->halted = 0;
first_ppc_cpu->env.nip = spapr->entry_point;
}
static void spapr_cpu_reset(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
cpu_reset(cs);
/* All CPUs start halted. CPU0 is unhalted from the machine level
* reset code and the rest are explicitly started up by the guest
* using an RTAS call */
cs->halted = 1;
env->spr[SPR_HIOR] = 0;
env->external_htab = (uint8_t *)spapr->htab;
if (kvm_enabled() && !env->external_htab) {
/*
* HV KVM, set external_htab to 1 so our ppc_hash64_load_hpte*
* functions do the right thing.
*/
env->external_htab = (void *)1;
}
env->htab_base = -1;
/*
* htab_mask is the mask used to normalize hash value to PTEG index.
* htab_shift is log2 of hash table size.
* We have 8 hpte per group, and each hpte is 16 bytes.
* ie have 128 bytes per hpte entry.
*/
env->htab_mask = (1ULL << ((spapr)->htab_shift - 7)) - 1;
env->spr[SPR_SDR1] = (target_ulong)(uintptr_t)spapr->htab |
(spapr->htab_shift - 18);
}
static void spapr_create_nvram(sPAPREnvironment *spapr)
{
DeviceState *dev = qdev_create(&spapr->vio_bus->bus, "spapr-nvram");
DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0);
if (dinfo) {
qdev_prop_set_drive_nofail(dev, "drive", dinfo->bdrv);
}
qdev_init_nofail(dev);
spapr->nvram = (struct sPAPRNVRAM *)dev;
}
/* Returns whether we want to use VGA or not */
static int spapr_vga_init(PCIBus *pci_bus)
{
switch (vga_interface_type) {
case VGA_NONE:
return false;
case VGA_DEVICE:
return true;
case VGA_STD:
return pci_vga_init(pci_bus) != NULL;
default:
fprintf(stderr, "This vga model is not supported,"
"currently it only supports -vga std\n");
exit(0);
}
}
static const VMStateDescription vmstate_spapr = {
.name = "spapr",
.version_id = 2,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(next_irq, sPAPREnvironment),
/* RTC offset */
VMSTATE_UINT64(rtc_offset, sPAPREnvironment),
VMSTATE_PPC_TIMEBASE_V(tb, sPAPREnvironment, 2),
VMSTATE_END_OF_LIST()
},
};
#define HPTE(_table, _i) (void *)(((uint64_t *)(_table)) + ((_i) * 2))
#define HPTE_VALID(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_VALID)
#define HPTE_DIRTY(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_HPTE_DIRTY)
#define CLEAN_HPTE(_hpte) ((*(uint64_t *)(_hpte)) &= tswap64(~HPTE64_V_HPTE_DIRTY))
static int htab_save_setup(QEMUFile *f, void *opaque)
{
sPAPREnvironment *spapr = opaque;
/* "Iteration" header */
qemu_put_be32(f, spapr->htab_shift);
if (spapr->htab) {
spapr->htab_save_index = 0;
spapr->htab_first_pass = true;
} else {
assert(kvm_enabled());
spapr->htab_fd = kvmppc_get_htab_fd(false);
if (spapr->htab_fd < 0) {
fprintf(stderr, "Unable to open fd for reading hash table from KVM: %s\n",
strerror(errno));
return -1;
}
}
return 0;
}
static void htab_save_first_pass(QEMUFile *f, sPAPREnvironment *spapr,
int64_t max_ns)
{
int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64;
int index = spapr->htab_save_index;
int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
assert(spapr->htab_first_pass);
do {
int chunkstart;
/* Consume invalid HPTEs */
while ((index < htabslots)
&& !HPTE_VALID(HPTE(spapr->htab, index))) {
index++;
CLEAN_HPTE(HPTE(spapr->htab, index));
}
/* Consume valid HPTEs */
chunkstart = index;
while ((index < htabslots)
&& HPTE_VALID(HPTE(spapr->htab, index))) {
index++;
CLEAN_HPTE(HPTE(spapr->htab, index));
}
if (index > chunkstart) {
int n_valid = index - chunkstart;
qemu_put_be32(f, chunkstart);
qemu_put_be16(f, n_valid);
qemu_put_be16(f, 0);
qemu_put_buffer(f, HPTE(spapr->htab, chunkstart),
HASH_PTE_SIZE_64 * n_valid);
if ((qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) {
break;
}
}
} while ((index < htabslots) && !qemu_file_rate_limit(f));
if (index >= htabslots) {
assert(index == htabslots);
index = 0;
spapr->htab_first_pass = false;
}
spapr->htab_save_index = index;
}
static int htab_save_later_pass(QEMUFile *f, sPAPREnvironment *spapr,
int64_t max_ns)
{
bool final = max_ns < 0;
int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64;
int examined = 0, sent = 0;
int index = spapr->htab_save_index;
int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
assert(!spapr->htab_first_pass);
do {
int chunkstart, invalidstart;
/* Consume non-dirty HPTEs */
while ((index < htabslots)
&& !HPTE_DIRTY(HPTE(spapr->htab, index))) {
index++;
examined++;
}
chunkstart = index;
/* Consume valid dirty HPTEs */
while ((index < htabslots)
&& HPTE_DIRTY(HPTE(spapr->htab, index))
&& HPTE_VALID(HPTE(spapr->htab, index))) {
CLEAN_HPTE(HPTE(spapr->htab, index));
index++;
examined++;
}
invalidstart = index;
/* Consume invalid dirty HPTEs */
while ((index < htabslots)
&& HPTE_DIRTY(HPTE(spapr->htab, index))
&& !HPTE_VALID(HPTE(spapr->htab, index))) {
CLEAN_HPTE(HPTE(spapr->htab, index));
index++;
examined++;
}
if (index > chunkstart) {
int n_valid = invalidstart - chunkstart;
int n_invalid = index - invalidstart;
qemu_put_be32(f, chunkstart);
qemu_put_be16(f, n_valid);
qemu_put_be16(f, n_invalid);
qemu_put_buffer(f, HPTE(spapr->htab, chunkstart),
HASH_PTE_SIZE_64 * n_valid);
sent += index - chunkstart;
if (!final && (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) {
break;
}
}
if (examined >= htabslots) {
break;
}
if (index >= htabslots) {
assert(index == htabslots);
index = 0;
}
} while ((examined < htabslots) && (!qemu_file_rate_limit(f) || final));
if (index >= htabslots) {
assert(index == htabslots);
index = 0;
}
spapr->htab_save_index = index;
return (examined >= htabslots) && (sent == 0) ? 1 : 0;
}
#define MAX_ITERATION_NS 5000000 /* 5 ms */
#define MAX_KVM_BUF_SIZE 2048
static int htab_save_iterate(QEMUFile *f, void *opaque)
{
sPAPREnvironment *spapr = opaque;
int rc = 0;
/* Iteration header */
qemu_put_be32(f, 0);
if (!spapr->htab) {
assert(kvm_enabled());
rc = kvmppc_save_htab(f, spapr->htab_fd,
MAX_KVM_BUF_SIZE, MAX_ITERATION_NS);
if (rc < 0) {
return rc;
}
} else if (spapr->htab_first_pass) {
htab_save_first_pass(f, spapr, MAX_ITERATION_NS);
} else {
rc = htab_save_later_pass(f, spapr, MAX_ITERATION_NS);
}
/* End marker */
qemu_put_be32(f, 0);
qemu_put_be16(f, 0);
qemu_put_be16(f, 0);
return rc;
}
static int htab_save_complete(QEMUFile *f, void *opaque)
{
sPAPREnvironment *spapr = opaque;
/* Iteration header */
qemu_put_be32(f, 0);
if (!spapr->htab) {
int rc;
assert(kvm_enabled());
rc = kvmppc_save_htab(f, spapr->htab_fd, MAX_KVM_BUF_SIZE, -1);
if (rc < 0) {
return rc;
}
close(spapr->htab_fd);
spapr->htab_fd = -1;
} else {
htab_save_later_pass(f, spapr, -1);
}
/* End marker */
qemu_put_be32(f, 0);
qemu_put_be16(f, 0);
qemu_put_be16(f, 0);
return 0;
}
static int htab_load(QEMUFile *f, void *opaque, int version_id)
{
sPAPREnvironment *spapr = opaque;
uint32_t section_hdr;
int fd = -1;
if (version_id < 1 || version_id > 1) {
fprintf(stderr, "htab_load() bad version\n");
return -EINVAL;
}
section_hdr = qemu_get_be32(f);
if (section_hdr) {
/* First section, just the hash shift */
if (spapr->htab_shift != section_hdr) {
return -EINVAL;
}
return 0;
}
if (!spapr->htab) {
assert(kvm_enabled());
fd = kvmppc_get_htab_fd(true);
if (fd < 0) {
fprintf(stderr, "Unable to open fd to restore KVM hash table: %s\n",
strerror(errno));
}
}
while (true) {
uint32_t index;
uint16_t n_valid, n_invalid;
index = qemu_get_be32(f);
n_valid = qemu_get_be16(f);
n_invalid = qemu_get_be16(f);
if ((index == 0) && (n_valid == 0) && (n_invalid == 0)) {
/* End of Stream */
break;
}
if ((index + n_valid + n_invalid) >
(HTAB_SIZE(spapr) / HASH_PTE_SIZE_64)) {
/* Bad index in stream */
fprintf(stderr, "htab_load() bad index %d (%hd+%hd entries) "
"in htab stream (htab_shift=%d)\n", index, n_valid, n_invalid,
spapr->htab_shift);
return -EINVAL;
}
if (spapr->htab) {
if (n_valid) {
qemu_get_buffer(f, HPTE(spapr->htab, index),
HASH_PTE_SIZE_64 * n_valid);
}
if (n_invalid) {
memset(HPTE(spapr->htab, index + n_valid), 0,
HASH_PTE_SIZE_64 * n_invalid);
}
} else {
int rc;
assert(fd >= 0);
rc = kvmppc_load_htab_chunk(f, fd, index, n_valid, n_invalid);
if (rc < 0) {
return rc;
}
}
}
if (!spapr->htab) {
assert(fd >= 0);
close(fd);
}
return 0;
}
static SaveVMHandlers savevm_htab_handlers = {
.save_live_setup = htab_save_setup,
.save_live_iterate = htab_save_iterate,
.save_live_complete = htab_save_complete,
.load_state = htab_load,
};
/* pSeries LPAR / sPAPR hardware init */
static void ppc_spapr_init(MachineState *machine)
{
ram_addr_t ram_size = machine->ram_size;
const char *cpu_model = machine->cpu_model;
const char *kernel_filename = machine->kernel_filename;
const char *kernel_cmdline = machine->kernel_cmdline;
const char *initrd_filename = machine->initrd_filename;
const char *boot_device = machine->boot_order;
PowerPCCPU *cpu;
CPUPPCState *env;
PCIHostState *phb;
int i;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
hwaddr rma_alloc_size;
hwaddr node0_size = (nb_numa_nodes > 1) ? node_mem[0] : ram_size;
uint32_t initrd_base = 0;
long kernel_size = 0, initrd_size = 0;
long load_limit, rtas_limit, fw_size;
bool kernel_le = false;
char *filename;
msi_supported = true;
spapr = g_malloc0(sizeof(*spapr));
QLIST_INIT(&spapr->phbs);
cpu_ppc_hypercall = emulate_spapr_hypercall;
/* Allocate RMA if necessary */
rma_alloc_size = kvmppc_alloc_rma("ppc_spapr.rma", sysmem);
if (rma_alloc_size == -1) {
hw_error("qemu: Unable to create RMA\n");
exit(1);
}
if (rma_alloc_size && (rma_alloc_size < node0_size)) {
spapr->rma_size = rma_alloc_size;
} else {
spapr->rma_size = node0_size;
/* With KVM, we don't actually know whether KVM supports an
* unbounded RMA (PR KVM) or is limited by the hash table size
* (HV KVM using VRMA), so we always assume the latter
*
* In that case, we also limit the initial allocations for RTAS
* etc... to 256M since we have no way to know what the VRMA size
* is going to be as it depends on the size of the hash table
* isn't determined yet.
*/
if (kvm_enabled()) {
spapr->vrma_adjust = 1;
spapr->rma_size = MIN(spapr->rma_size, 0x10000000);
}
}
if (spapr->rma_size > node0_size) {
fprintf(stderr, "Error: Numa node 0 has to span the RMA (%#08"HWADDR_PRIx")\n",
spapr->rma_size);
exit(1);
}
/* We place the device tree and RTAS just below either the top of the RMA,
* or just below 2GB, whichever is lowere, so that it can be
* processed with 32-bit real mode code if necessary */
rtas_limit = MIN(spapr->rma_size, 0x80000000);
spapr->rtas_addr = rtas_limit - RTAS_MAX_SIZE;
spapr->fdt_addr = spapr->rtas_addr - FDT_MAX_SIZE;
load_limit = spapr->fdt_addr - FW_OVERHEAD;
/* We aim for a hash table of size 1/128 the size of RAM. The
* normal rule of thumb is 1/64 the size of RAM, but that's much
* more than needed for the Linux guests we support. */
spapr->htab_shift = 18; /* Minimum architected size */
while (spapr->htab_shift <= 46) {
if ((1ULL << (spapr->htab_shift + 7)) >= ram_size) {
break;
}
spapr->htab_shift++;
}
/* Set up Interrupt Controller before we create the VCPUs */
spapr->icp = xics_system_init(smp_cpus * kvmppc_smt_threads() / smp_threads,
XICS_IRQS);
spapr->next_irq = XICS_IRQ_BASE;
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = kvm_enabled() ? "host" : "POWER7";
}
for (i = 0; i < smp_cpus; i++) {
cpu = cpu_ppc_init(cpu_model);
if (cpu == NULL) {
fprintf(stderr, "Unable to find PowerPC CPU definition\n");
exit(1);
}
env = &cpu->env;
/* Set time-base frequency to 512 MHz */
cpu_ppc_tb_init(env, TIMEBASE_FREQ);
/* PAPR always has exception vectors in RAM not ROM. To ensure this,
* MSR[IP] should never be set.
*/
env->msr_mask &= ~(1 << 6);
/* Tell KVM that we're in PAPR mode */
if (kvm_enabled()) {
kvmppc_set_papr(cpu);
}
if (cpu->max_compat) {
if (ppc_set_compat(cpu, cpu->max_compat) < 0) {
exit(1);
}
}
xics_cpu_setup(spapr->icp, cpu);
qemu_register_reset(spapr_cpu_reset, cpu);
}
/* allocate RAM */
spapr->ram_limit = ram_size;
if (spapr->ram_limit > rma_alloc_size) {
ram_addr_t nonrma_base = rma_alloc_size;
ram_addr_t nonrma_size = spapr->ram_limit - rma_alloc_size;
memory_region_init_ram(ram, NULL, "ppc_spapr.ram", nonrma_size);
vmstate_register_ram_global(ram);
memory_region_add_subregion(sysmem, nonrma_base, ram);
}
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "spapr-rtas.bin");
spapr->rtas_size = load_image_targphys(filename, spapr->rtas_addr,
rtas_limit - spapr->rtas_addr);
if (spapr->rtas_size < 0) {
hw_error("qemu: could not load LPAR rtas '%s'\n", filename);
exit(1);
}
if (spapr->rtas_size > RTAS_MAX_SIZE) {
hw_error("RTAS too big ! 0x%lx bytes (max is 0x%x)\n",
spapr->rtas_size, RTAS_MAX_SIZE);
exit(1);
}
g_free(filename);
/* Set up EPOW events infrastructure */
spapr_events_init(spapr);
/* Set up VIO bus */
spapr->vio_bus = spapr_vio_bus_init();
for (i = 0; i < MAX_SERIAL_PORTS; i++) {
if (serial_hds[i]) {
spapr_vty_create(spapr->vio_bus, serial_hds[i]);
}
}
/* We always have at least the nvram device on VIO */
spapr_create_nvram(spapr);
/* Set up PCI */
spapr_pci_msi_init(spapr, SPAPR_PCI_MSI_WINDOW);
spapr_pci_rtas_init();
phb = spapr_create_phb(spapr, 0);
for (i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
if (!nd->model) {
nd->model = g_strdup("ibmveth");
}
if (strcmp(nd->model, "ibmveth") == 0) {
spapr_vlan_create(spapr->vio_bus, nd);
} else {
pci_nic_init_nofail(&nd_table[i], phb->bus, nd->model, NULL);
}
}
for (i = 0; i <= drive_get_max_bus(IF_SCSI); i++) {
spapr_vscsi_create(spapr->vio_bus);
}
/* Graphics */
if (spapr_vga_init(phb->bus)) {
spapr->has_graphics = true;
}
if (usb_enabled(spapr->has_graphics)) {
pci_create_simple(phb->bus, -1, "pci-ohci");
if (spapr->has_graphics) {
usbdevice_create("keyboard");
usbdevice_create("mouse");
}
}
if (spapr->rma_size < (MIN_RMA_SLOF << 20)) {
fprintf(stderr, "qemu: pSeries SLOF firmware requires >= "
"%ldM guest RMA (Real Mode Area memory)\n", MIN_RMA_SLOF);
exit(1);
}
if (kernel_filename) {
uint64_t lowaddr = 0;
kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,
NULL, &lowaddr, NULL, 1, ELF_MACHINE, 0);
if (kernel_size == ELF_LOAD_WRONG_ENDIAN) {
kernel_size = load_elf(kernel_filename,
translate_kernel_address, NULL,
NULL, &lowaddr, NULL, 0, ELF_MACHINE, 0);
kernel_le = kernel_size > 0;
}
if (kernel_size < 0) {
fprintf(stderr, "qemu: error loading %s: %s\n",
kernel_filename, load_elf_strerror(kernel_size));
exit(1);
}
/* load initrd */
if (initrd_filename) {
/* Try to locate the initrd in the gap between the kernel
* and the firmware. Add a bit of space just in case
*/
initrd_base = (KERNEL_LOAD_ADDR + kernel_size + 0x1ffff) & ~0xffff;
initrd_size = load_image_targphys(initrd_filename, initrd_base,
load_limit - initrd_base);
if (initrd_size < 0) {
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
initrd_filename);
exit(1);
}
} else {
initrd_base = 0;
initrd_size = 0;
}
}
if (bios_name == NULL) {
bios_name = FW_FILE_NAME;
}
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
fw_size = load_image_targphys(filename, 0, FW_MAX_SIZE);
if (fw_size < 0) {
hw_error("qemu: could not load LPAR rtas '%s'\n", filename);
exit(1);
}
g_free(filename);
spapr->entry_point = 0x100;
vmstate_register(NULL, 0, &vmstate_spapr, spapr);
register_savevm_live(NULL, "spapr/htab", -1, 1,
&savevm_htab_handlers, spapr);
/* Prepare the device tree */
spapr->fdt_skel = spapr_create_fdt_skel(initrd_base, initrd_size,
kernel_size, kernel_le,
boot_device, kernel_cmdline,
spapr->epow_irq);
assert(spapr->fdt_skel != NULL);
}
static int spapr_kvm_type(const char *vm_type)
{
if (!vm_type) {
return 0;
}
if (!strcmp(vm_type, "HV")) {
return 1;
}
if (!strcmp(vm_type, "PR")) {
return 2;
}
error_report("Unknown kvm-type specified '%s'", vm_type);
exit(1);
}
/*
* Implementation of an interface to adjust firmware patch
* for the bootindex property handling.
*/
static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus,
DeviceState *dev)
{
#define CAST(type, obj, name) \
((type *)object_dynamic_cast(OBJECT(obj), (name)))
SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE);
sPAPRPHBState *phb = CAST(sPAPRPHBState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE);
if (d) {
void *spapr = CAST(void, bus->parent, "spapr-vscsi");
VirtIOSCSI *virtio = CAST(VirtIOSCSI, bus->parent, TYPE_VIRTIO_SCSI);
USBDevice *usb = CAST(USBDevice, bus->parent, TYPE_USB_DEVICE);
if (spapr) {
/*
* Replace "channel@0/disk@0,0" with "disk@8000000000000000":
* We use SRP luns of the form 8000 | (bus << 8) | (id << 5) | lun
* in the top 16 bits of the 64-bit LUN
*/
unsigned id = 0x8000 | (d->id << 8) | d->lun;
return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev),
(uint64_t)id << 48);
} else if (virtio) {
/*
* We use SRP luns of the form 01000000 | (target << 8) | lun
* in the top 32 bits of the 64-bit LUN
* Note: the quote above is from SLOF and it is wrong,
* the actual binding is:
* swap 0100 or 10 << or 20 << ( target lun-id -- srplun )
*/
unsigned id = 0x1000000 | (d->id << 16) | d->lun;
return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev),
(uint64_t)id << 32);
} else if (usb) {
/*
* We use SRP luns of the form 01000000 | (usb-port << 16) | lun
* in the top 32 bits of the 64-bit LUN
*/
unsigned usb_port = atoi(usb->port->path);
unsigned id = 0x1000000 | (usb_port << 16) | d->lun;
return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev),
(uint64_t)id << 32);
}
}
if (phb) {
/* Replace "pci" with "pci@800000020000000" */
return g_strdup_printf("pci@%"PRIX64, phb->buid);
}
return NULL;
}
static char *spapr_get_kvm_type(Object *obj, Error **errp)
{
SPAPRMachine *sm = SPAPR_MACHINE(obj);
return g_strdup(sm->kvm_type);
}
static void spapr_set_kvm_type(Object *obj, const char *value, Error **errp)
{
SPAPRMachine *sm = SPAPR_MACHINE(obj);
g_free(sm->kvm_type);
sm->kvm_type = g_strdup(value);
}
static void spapr_machine_initfn(Object *obj)
{
object_property_add_str(obj, "kvm-type",
spapr_get_kvm_type, spapr_set_kvm_type, NULL);
}
static void spapr_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
FWPathProviderClass *fwc = FW_PATH_PROVIDER_CLASS(oc);
mc->name = "pseries";
mc->desc = "pSeries Logical Partition (PAPR compliant)";
mc->is_default = 1;
mc->init = ppc_spapr_init;
mc->reset = ppc_spapr_reset;
mc->block_default_type = IF_SCSI;
mc->max_cpus = MAX_CPUS;
mc->no_parallel = 1;
mc->default_boot_order = NULL;
mc->kvm_type = spapr_kvm_type;
fwc->get_dev_path = spapr_get_fw_dev_path;
}
static const TypeInfo spapr_machine_info = {
.name = TYPE_SPAPR_MACHINE,
.parent = TYPE_MACHINE,
.instance_size = sizeof(SPAPRMachine),
.instance_init = spapr_machine_initfn,
.class_init = spapr_machine_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_FW_PATH_PROVIDER },
{ }
},
};
static void spapr_machine_register_types(void)
{
type_register_static(&spapr_machine_info);
}
type_init(spapr_machine_register_types)
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