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Merge branch 'ppc-for-upstream' of git://repo.or.cz/qemu/agraf 

* 'ppc-for-upstream' of git://repo.or.cz/qemu/agraf: (35 commits)
  PPC: KVM: Fix BAT put
  PPC: e500: Only expose even TLB sizes in initial TLB
  ppc/pseries: Reset VPA registration on CPU reset
  pseries: Don't test for MSR_PR for hypercalls under KVM
  PPC: e500: calculate initrd_base like dt_base
  PPC: e500: increase DTC_LOAD_PAD
  device tree: simplify dumpdtb code
  fdt: move dumpdtb interpretation code to device_tree.c
  target-ppc: Remove unused power_mode field from cpu state
  pseries: Set hash table size based on RAM size
  pseries: Remove unnecessary locking from PAPR hash table hcalls
  ppc405_uc: Fix buffer overflow
  target-ppc: KVM: Fix some kernel version edge cases for kvmppc_reset_htab()
  pseries: Fix semantics of RTAS int-on, int-off and set-xive functions
  pseries: Rework implementation of TCE bypass
  pseries: Remove never used flags field from spapr vio devices
  pseries: Remove XICS irq type enum type
  pseries: Remove C bitfields from xics code
  pseries: Small cleanup to H_CEDE implementation
  pseries: Fix XICS reset
  ...
This commit is contained in:
Aurelien Jarno 2012-10-06 18:51:36 +02:00
parent 1d31fca470 ef8beb0e94
commit 6b2f90fbbd
21 changed files with 576 additions and 437 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
MAINTAINERS
View File

@ -349,9 +349,31 @@ PowerPC Machines
405
M: Alexander Graf <agraf@suse.de>
L: qemu-ppc@nongnu.org
S: Maintained
S: Odd Fixes
F: hw/ppc405_boards.c
Bamboo
M: Alexander Graf <agraf@suse.de>
L: qemu-ppc@nongnu.org
S: Odd Fixes
F: hw/ppc440_bamboo.c
e500
M: Alexander Graf <agraf@suse.de>
M: Scott Wood <scottwood@freescale.com>
L: qemu-ppc@nongnu.org
S: Supported
F: hw/ppc/e500.[hc]
F: hw/ppc/e500plat.c
mpc8544ds
M: Alexander Graf <agraf@suse.de>
M: Scott Wood <scottwood@freescale.com>
L: qemu-ppc@nongnu.org
S: Supported
F: hw/ppc/mpc8544ds.c
F: hw/mpc8544_guts.c
New World
M: Alexander Graf <agraf@suse.de>
L: qemu-ppc@nongnu.org
@ -374,6 +396,19 @@ S: Odd Fixes
F: hw/ppc_prep.c
F: hw/prep_pci.[hc]
sPAPR
M: David Gibson <david@gibson.dropbear.id.au>
M: Alexander Graf <agraf@suse.de>
L: qemu-ppc@nongnu.org
S: Supported
F: hw/spapr*
virtex_ml507
M: Edgar E. Iglesias <edgar.iglesias@gmail.com>
L: qemu-ppc@nongnu.org
S: Odd Fixes
F: hw/virtex_ml507.c
SH4 Machines
------------
R2D
@ -457,6 +492,19 @@ S: Supported
F: hw/pci*
F: hw/piix*
ppc4xx
M: Alexander Graf <agraf@suse.de>
L: qemu-ppc@nongnu.org
S: Odd Fixes
F: hw/ppc4xx*.[hc]
ppce500
M: Alexander Graf <agraf@suse.de>
M: Scott Wood <scottwood@freescale.com>
L: qemu-ppc@nongnu.org
S: Supported
F: hw/ppce500_*
SCSI
M: Paolo Bonzini <pbonzini@redhat.com>
S: Supported

15
device_tree.c
View File

@ -304,3 +304,18 @@ int qemu_devtree_add_subnode(void *fdt, const char *name)
g_free(dupname);
return retval;
}
void qemu_devtree_dumpdtb(void *fdt, int size)
{
QemuOpts *machine_opts;
machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
if (machine_opts) {
const char *dumpdtb = qemu_opt_get(machine_opts, "dumpdtb");
if (dumpdtb) {
/* Dump the dtb to a file and quit */
exit(g_file_set_contents(dumpdtb, fdt, size, NULL) ? 0 : 1);
}
}
}

2
device_tree.h
View File

@ -49,4 +49,6 @@ int qemu_devtree_add_subnode(void *fdt, const char *name);
sizeof(qdt_tmp)); \
} while (0)
void qemu_devtree_dumpdtb(void *fdt, int size);
#endif /* __DEVICE_TREE_H__ */

24
hw/ppc/e500.c
View File

@ -36,7 +36,7 @@
#define BINARY_DEVICE_TREE_FILE "mpc8544ds.dtb"
#define UIMAGE_LOAD_BASE 0
#define DTC_LOAD_PAD 0x500000
#define DTC_LOAD_PAD 0x1800000
#define DTC_PAD_MASK 0xFFFFF
#define INITRD_LOAD_PAD 0x2000000
#define INITRD_PAD_MASK 0xFFFFFF
@ -139,12 +139,10 @@ static int ppce500_load_device_tree(CPUPPCState *env,
0x0, 0x10000,
};
QemuOpts *machine_opts;
const char *dumpdtb = NULL;
const char *dtb_file = NULL;
machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
if (machine_opts) {
dumpdtb = qemu_opt_get(machine_opts, "dumpdtb");
dtb_file = qemu_opt_get(machine_opts, "dtb");
toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible");
}
@ -334,18 +332,7 @@ static int ppce500_load_device_tree(CPUPPCState *env,
}
done:
if (dumpdtb) {
/* Dump the dtb to a file and quit */
FILE *f = fopen(dumpdtb, "wb");
size_t len;
len = fwrite(fdt, fdt_size, 1, f);
fclose(f);
if (len != fdt_size) {
exit(1);
}
exit(0);
}
qemu_devtree_dumpdtb(fdt, fdt_size);
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
if (ret < 0) {
goto out;
@ -375,6 +362,10 @@ static void mmubooke_create_initial_mapping(CPUPPCState *env)
the device tree top */
dt_end = bi->dt_base + bi->dt_size;
ps = booke206_page_size_to_tlb(dt_end) + 1;
if (ps & 1) {
/* e500v2 can only do even TLB size bits */
ps++;
}
size = (ps << MAS1_TSIZE_SHIFT);
tlb->mas1 = MAS1_VALID | size;
tlb->mas2 = 0;
@ -553,7 +544,8 @@ void ppce500_init(PPCE500Params *params)
/* Load initrd. */
if (params->initrd_filename) {
initrd_base = (kernel_size + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK;
initrd_base = (loadaddr + kernel_size + INITRD_LOAD_PAD) &
~INITRD_PAD_MASK;
initrd_size = load_image_targphys(params->initrd_filename, initrd_base,
ram_size - initrd_base);

16
hw/ppc405_uc.c
View File

@ -191,7 +191,8 @@ enum {
typedef struct ppc4xx_pob_t ppc4xx_pob_t;
struct ppc4xx_pob_t {
uint32_t bear;
uint32_t besr[2];
uint32_t besr0;
uint32_t besr1;
};
static uint32_t dcr_read_pob (void *opaque, int dcrn)
@ -205,8 +206,10 @@ static uint32_t dcr_read_pob (void *opaque, int dcrn)
ret = pob->bear;
break;
case POB0_BESR0:
ret = pob->besr0;
break;
case POB0_BESR1:
ret = pob->besr[dcrn - POB0_BESR0];
ret = pob->besr1;
break;
default:
/* Avoid gcc warning */
@ -227,9 +230,12 @@ static void dcr_write_pob (void *opaque, int dcrn, uint32_t val)
/* Read only */
break;
case POB0_BESR0:
/* Write-clear */
pob->besr0 &= ~val;
break;
case POB0_BESR1:
/* Write-clear */
pob->besr[dcrn - POB0_BESR0] &= ~val;
pob->besr1 &= ~val;
break;
}
}
@ -241,8 +247,8 @@ static void ppc4xx_pob_reset (void *opaque)
pob = opaque;
/* No error */
pob->bear = 0x00000000;
pob->besr[0] = 0x0000000;
pob->besr[1] = 0x0000000;
pob->besr0 = 0x0000000;
pob->besr1 = 0x0000000;
}
static void ppc4xx_pob_init(CPUPPCState *env)

335
hw/spapr.c
View File

@ -84,9 +84,11 @@
#define PHANDLE_XICP 0x00001111
#define HTAB_SIZE(spapr) (1ULL << ((spapr)->htab_shift))
sPAPREnvironment *spapr;
int spapr_allocate_irq(int hint, enum xics_irq_type type)
int spapr_allocate_irq(int hint, bool lsi)
{
int irq;
@ -102,13 +104,13 @@ int spapr_allocate_irq(int hint, enum xics_irq_type type)
return 0;
}
xics_set_irq_type(spapr->icp, irq, type);
xics_set_irq_type(spapr->icp, irq, lsi);
return irq;
}
/* Allocate block of consequtive IRQs, returns a number of the first */
int spapr_allocate_irq_block(int num, enum xics_irq_type type)
int spapr_allocate_irq_block(int num, bool lsi)
{
int first = -1;
int i;
@ -116,7 +118,7 @@ int spapr_allocate_irq_block(int num, enum xics_irq_type type)
for (i = 0; i < num; ++i) {
int irq;
irq = spapr_allocate_irq(0, type);
irq = spapr_allocate_irq(0, lsi);
if (!irq) {
return -1;
}
@ -133,12 +135,13 @@ int spapr_allocate_irq_block(int num, enum xics_irq_type type)
return first;
}
static int spapr_set_associativity(void *fdt, sPAPREnvironment *spapr)
static int spapr_fixup_cpu_dt(void *fdt, sPAPREnvironment *spapr)
{
int ret = 0, offset;
CPUPPCState *env;
char cpu_model[32];
int smt = kvmppc_smt_threads();
uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)};
assert(spapr->cpu_model);
@ -162,12 +165,20 @@ static int spapr_set_associativity(void *fdt, sPAPREnvironment *spapr)
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;
}
}
return ret;
}
@ -205,36 +216,6 @@ static size_t create_page_sizes_prop(CPUPPCState *env, uint32_t *prop,
return (p - prop) * sizeof(uint32_t);
}
static void *spapr_create_fdt_skel(const char *cpu_model,
target_phys_addr_t rma_size,
target_phys_addr_t initrd_base,
target_phys_addr_t initrd_size,
target_phys_addr_t kernel_size,
const char *boot_device,
const char *kernel_cmdline,
long hash_shift)
{
void *fdt;
CPUPPCState *env;
uint64_t mem_reg_property[2];
uint32_t start_prop = cpu_to_be32(initrd_base);
uint32_t end_prop = cpu_to_be32(initrd_base + initrd_size);
uint32_t pft_size_prop[] = {0, cpu_to_be32(hash_shift)};
char hypertas_prop[] = "hcall-pft\0hcall-term\0hcall-dabr\0hcall-interrupt"
"\0hcall-tce\0hcall-vio\0hcall-splpar\0hcall-bulk";
char qemu_hypertas_prop[] = "hcall-memop1";
uint32_t interrupt_server_ranges_prop[] = {0, cpu_to_be32(smp_cpus)};
int i;
char *modelname;
int smt = kvmppc_smt_threads();
unsigned char vec5[] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x80};
uint32_t refpoints[] = {cpu_to_be32(0x4), cpu_to_be32(0x4)};
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];
target_phys_addr_t node0_size, mem_start;
#define _FDT(exp) \
do { \
int ret = (exp); \
@ -245,6 +226,27 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
} \
} while (0)
static void *spapr_create_fdt_skel(const char *cpu_model,
target_phys_addr_t initrd_base,
target_phys_addr_t initrd_size,
target_phys_addr_t kernel_size,
const char *boot_device,
const char *kernel_cmdline)
{
void *fdt;
CPUPPCState *env;
uint32_t start_prop = cpu_to_be32(initrd_base);
uint32_t end_prop = cpu_to_be32(initrd_base + initrd_size);
char hypertas_prop[] = "hcall-pft\0hcall-term\0hcall-dabr\0hcall-interrupt"
"\0hcall-tce\0hcall-vio\0hcall-splpar\0hcall-bulk";
char qemu_hypertas_prop[] = "hcall-memop1";
uint32_t refpoints[] = {cpu_to_be32(0x4), cpu_to_be32(0x4)};
uint32_t interrupt_server_ranges_prop[] = {0, cpu_to_be32(smp_cpus)};
char *modelname;
int i, smt = kvmppc_smt_threads();
unsigned char vec5[] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x80};
fdt = g_malloc0(FDT_MAX_SIZE);
_FDT((fdt_create(fdt, FDT_MAX_SIZE)));
@ -288,55 +290,6 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
_FDT((fdt_end_node(fdt)));
/* memory node(s) */
node0_size = (nb_numa_nodes > 1) ? node_mem[0] : ram_size;
if (rma_size > node0_size) {
rma_size = node0_size;
}
/* RMA */
mem_reg_property[0] = 0;
mem_reg_property[1] = cpu_to_be64(rma_size);
_FDT((fdt_begin_node(fdt, "memory@0")));
_FDT((fdt_property_string(fdt, "device_type", "memory")));
_FDT((fdt_property(fdt, "reg", mem_reg_property,
sizeof(mem_reg_property))));
_FDT((fdt_property(fdt, "ibm,associativity", associativity,
sizeof(associativity))));
_FDT((fdt_end_node(fdt)));
/* RAM: Node 0 */
if (node0_size > rma_size) {
mem_reg_property[0] = cpu_to_be64(rma_size);
mem_reg_property[1] = cpu_to_be64(node0_size - rma_size);
sprintf(mem_name, "memory@" TARGET_FMT_lx, rma_size);
_FDT((fdt_begin_node(fdt, mem_name)));
_FDT((fdt_property_string(fdt, "device_type", "memory")));
_FDT((fdt_property(fdt, "reg", mem_reg_property,
sizeof(mem_reg_property))));
_FDT((fdt_property(fdt, "ibm,associativity", associativity,
sizeof(associativity))));
_FDT((fdt_end_node(fdt)));
}
/* 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);
mem_reg_property[1] = cpu_to_be64(node_mem[i]);
associativity[3] = associativity[4] = cpu_to_be32(i);
sprintf(mem_name, "memory@" TARGET_FMT_lx, mem_start);
_FDT((fdt_begin_node(fdt, mem_name)));
_FDT((fdt_property_string(fdt, "device_type", "memory")));
_FDT((fdt_property(fdt, "reg", mem_reg_property,
sizeof(mem_reg_property))));
_FDT((fdt_property(fdt, "ibm,associativity", associativity,
sizeof(associativity))));
_FDT((fdt_end_node(fdt)));
mem_start += node_mem[i];
}
/* cpus */
_FDT((fdt_begin_node(fdt, "cpus")));
@ -388,8 +341,6 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
_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(fdt, "ibm,pft-size",
pft_size_prop, sizeof(pft_size_prop))));
_FDT((fdt_property_string(fdt, "status", "okay")));
_FDT((fdt_property(fdt, "64-bit", NULL, 0)));
@ -488,6 +439,68 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
return fdt;
}
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];
target_phys_addr_t node0_size, mem_start;
uint64_t mem_reg_property[2];
int i, off;
/* memory node(s) */
node0_size = (nb_numa_nodes > 1) ? node_mem[0] : ram_size;
if (spapr->rma_size > node0_size) {
spapr->rma_size = node0_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);
mem_reg_property[1] = cpu_to_be64(node_mem[i]);
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_mem[i];
}
return 0;
}
static void spapr_finalize_fdt(sPAPREnvironment *spapr,
target_phys_addr_t fdt_addr,
target_phys_addr_t rtas_addr,
@ -502,6 +515,12 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
/* 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");
@ -524,11 +543,9 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
}
/* Advertise NUMA via ibm,associativity */
if (nb_numa_nodes > 1) {
ret = spapr_set_associativity(fdt, spapr);
ret = spapr_fixup_cpu_dt(fdt, spapr);
if (ret < 0) {
fprintf(stderr, "Couldn't set up NUMA device tree properties\n");
}
fprintf(stderr, "Couldn't finalize CPU device tree properties\n");
}
if (!spapr->has_graphics) {
@ -555,15 +572,49 @@ static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
static void emulate_spapr_hypercall(CPUPPCState *env)
{
if (msr_pr) {
hcall_dprintf("Hypercall made with MSR[PR]=1\n");
env->gpr[3] = H_PRIVILEGE;
} else {
env->gpr[3] = spapr_hypercall(env, env->gpr[3], &env->gpr[4]);
}
}
static void spapr_reset(void *opaque)
static void spapr_reset_htab(sPAPREnvironment *spapr)
{
sPAPREnvironment *spapr = (sPAPREnvironment *)opaque;
long shift;
/* flush out the hash table */
memset(spapr->htab, 0, spapr->htab_size);
/* 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;
} 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) {
spapr->rma_size = kvmppc_rma_size(ram_size, spapr->htab_shift);
}
}
static void ppc_spapr_reset(void)
{
/* 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,
@ -580,8 +631,22 @@ static void spapr_reset(void *opaque)
static void spapr_cpu_reset(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
cpu_reset(CPU(cpu));
/* 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 */
env->halted = 1;
env->spr[SPR_HIOR] = 0;
env->external_htab = spapr->htab;
env->htab_base = -1;
env->htab_mask = HTAB_SIZE(spapr) - 1;
env->spr[SPR_SDR1] = (unsigned long)spapr->htab |
(spapr->htab_shift - 18);
}
/* Returns whether we want to use VGA or not */
@ -613,11 +678,10 @@ static void ppc_spapr_init(ram_addr_t ram_size,
int i;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
target_phys_addr_t rma_alloc_size, rma_size;
target_phys_addr_t rma_alloc_size;
uint32_t initrd_base = 0;
long kernel_size = 0, initrd_size = 0;
long load_limit, rtas_limit, fw_size;
long pteg_shift = 17;
char *filename;
msi_supported = true;
@ -634,20 +698,46 @@ static void ppc_spapr_init(ram_addr_t ram_size,
hw_error("qemu: Unable to create RMA\n");
exit(1);
}
if (rma_alloc_size && (rma_alloc_size < ram_size)) {
rma_size = rma_alloc_size;
spapr->rma_size = rma_alloc_size;
} else {
rma_size = ram_size;
spapr->rma_size = ram_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);
}
}
/* 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(rma_size, 0x80000000);
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++;
}
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = kvm_enabled() ? "host" : "POWER7";
@ -662,11 +752,16 @@ static void ppc_spapr_init(ram_addr_t ram_size,
/* Set time-base frequency to 512 MHz */
cpu_ppc_tb_init(env, TIMEBASE_FREQ);
qemu_register_reset(spapr_cpu_reset, cpu);
env->hreset_vector = 0x60;
/* PAPR always has exception vectors in RAM not ROM */
env->hreset_excp_prefix = 0;
env->gpr[3] = env->cpu_index;
/* Tell KVM that we're in PAPR mode */
if (kvm_enabled()) {
kvmppc_set_papr(env);
}
qemu_register_reset(spapr_cpu_reset, cpu);
}
/* allocate RAM */
@ -680,27 +775,6 @@ static void ppc_spapr_init(ram_addr_t ram_size,
memory_region_add_subregion(sysmem, nonrma_base, ram);
}
/* allocate hash page table. For now we always make this 16mb,
* later we should probably make it scale to the size of guest
* RAM */
spapr->htab_size = 1ULL << (pteg_shift + 7);
spapr->htab = qemu_memalign(spapr->htab_size, spapr->htab_size);
for (env = first_cpu; env != NULL; env = env->next_cpu) {
env->external_htab = spapr->htab;
env->htab_base = -1;
env->htab_mask = spapr->htab_size - 1;
/* Tell KVM that we're in PAPR mode */
env->spr[SPR_SDR1] = (unsigned long)spapr->htab |
((pteg_shift + 7) - 18);
env->spr[SPR_HIOR] = 0;
if (kvm_enabled()) {
kvmppc_set_papr(env);
}
}
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);
@ -773,7 +847,7 @@ static void ppc_spapr_init(ram_addr_t ram_size,
}
}
if (rma_size < (MIN_RMA_SLOF << 20)) {
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);
@ -824,26 +898,19 @@ static void ppc_spapr_init(ram_addr_t ram_size,
spapr->entry_point = 0x100;
/* SLOF will startup the secondary CPUs using RTAS */
for (env = first_cpu; env != NULL; env = env->next_cpu) {
env->halted = 1;
}
/* Prepare the device tree */
spapr->fdt_skel = spapr_create_fdt_skel(cpu_model, rma_size,
spapr->fdt_skel = spapr_create_fdt_skel(cpu_model,
initrd_base, initrd_size,
kernel_size,
boot_device, kernel_cmdline,
pteg_shift + 7);
boot_device, kernel_cmdline);
assert(spapr->fdt_skel != NULL);
qemu_register_reset(spapr_reset, spapr);
}
static QEMUMachine spapr_machine = {
.name = "pseries",
.desc = "pSeries Logical Partition (PAPR compliant)",
.init = ppc_spapr_init,
.reset = ppc_spapr_reset,
.max_cpus = MAX_CPUS,
.no_parallel = 1,
.use_scsi = 1,

14
hw/spapr.h
View File

@ -15,7 +15,9 @@ typedef struct sPAPREnvironment {
target_phys_addr_t ram_limit;
void *htab;
long htab_size;
long htab_shift;
target_phys_addr_t rma_size;
int vrma_adjust;
target_phys_addr_t fdt_addr, rtas_addr;
long rtas_size;
void *fdt_skel;
@ -289,17 +291,17 @@ void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn);
target_ulong spapr_hypercall(CPUPPCState *env, target_ulong opcode,
target_ulong *args);
int spapr_allocate_irq(int hint, enum xics_irq_type type);
int spapr_allocate_irq_block(int num, enum xics_irq_type type);
int spapr_allocate_irq(int hint, bool lsi);
int spapr_allocate_irq_block(int num, bool lsi);
static inline int spapr_allocate_msi(int hint)
{
return spapr_allocate_irq(hint, XICS_MSI);
return spapr_allocate_irq(hint, false);
}
static inline int spapr_allocate_lsi(int hint)
{
return spapr_allocate_irq(hint, XICS_LSI);
return spapr_allocate_irq(hint, true);
}
static inline uint32_t rtas_ld(target_ulong phys, int n)
@ -336,6 +338,8 @@ typedef struct sPAPRTCE {
void spapr_iommu_init(void);
DMAContext *spapr_tce_new_dma_context(uint32_t liobn, size_t window_size);
void spapr_tce_free(DMAContext *dma);
void spapr_tce_reset(DMAContext *dma);
void spapr_tce_set_bypass(DMAContext *dma, bool bypass);
int spapr_dma_dt(void *fdt, int node_off, const char *propname,
uint32_t liobn, uint64_t window, uint32_t size);
int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,

49
hw/spapr_hcall.c
View File

@ -39,22 +39,6 @@
#define HPTE_V_1TB_SEG 0x4000000000000000ULL
#define HPTE_V_VRMA_MASK 0x4001ffffff000000ULL
#define HPTE_V_HVLOCK 0x40ULL
static inline int lock_hpte(void *hpte, target_ulong bits)
{
uint64_t pteh;
pteh = ldq_p(hpte);
/* We're protected by qemu's global lock here */
if (pteh & bits) {
return 0;
}
stq_p(hpte, pteh | HPTE_V_HVLOCK);
return 1;
}
static target_ulong compute_tlbie_rb(target_ulong v, target_ulong r,
target_ulong pte_index)
{
@ -151,8 +135,7 @@ static target_ulong h_enter(CPUPPCState *env, sPAPREnvironment *spapr,
if (i == 8) {
return H_PTEG_FULL;
}
if (((ldq_p(hpte) & HPTE_V_VALID) == 0) &&
lock_hpte(hpte, HPTE_V_HVLOCK | HPTE_V_VALID)) {
if ((ldq_p(hpte) & HPTE_V_VALID) == 0) {
break;
}
hpte += HASH_PTE_SIZE_64;
@ -160,7 +143,7 @@ static target_ulong h_enter(CPUPPCState *env, sPAPREnvironment *spapr,
} else {
i = 0;
hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
if (!lock_hpte(hpte, HPTE_V_HVLOCK | HPTE_V_VALID)) {
if (ldq_p(hpte) & HPTE_V_VALID) {
return H_PTEG_FULL;
}
}
@ -168,7 +151,6 @@ static target_ulong h_enter(CPUPPCState *env, sPAPREnvironment *spapr,
/* eieio(); FIXME: need some sort of barrier for smp? */
stq_p(hpte, pteh);
assert(!(ldq_p(hpte) & HPTE_V_HVLOCK));
args[0] = pte_index + i;
return H_SUCCESS;
}
@ -193,11 +175,6 @@ static target_ulong remove_hpte(CPUPPCState *env, target_ulong ptex,
}
hpte = env->external_htab + (ptex * HASH_PTE_SIZE_64);
while (!lock_hpte(hpte, HPTE_V_HVLOCK)) {
/* We have no real concurrency in qemu soft-emulation, so we
* will never actually have a contested lock */
assert(0);
}
v = ldq_p(hpte);
r = ldq_p(hpte + (HASH_PTE_SIZE_64/2));
@ -205,16 +182,13 @@ static target_ulong remove_hpte(CPUPPCState *env, target_ulong ptex,
if ((v & HPTE_V_VALID) == 0 ||
((flags & H_AVPN) && (v & ~0x7fULL) != avpn) ||
((flags & H_ANDCOND) && (v & avpn) != 0)) {
stq_p(hpte, v & ~HPTE_V_HVLOCK);
assert(!(ldq_p(hpte) & HPTE_V_HVLOCK));
return REMOVE_NOT_FOUND;
}
*vp = v & ~HPTE_V_HVLOCK;
*vp = v;
*rp = r;
stq_p(hpte, 0);
rb = compute_tlbie_rb(v, r, ptex);
ppc_tlb_invalidate_one(env, rb);
assert(!(ldq_p(hpte) & HPTE_V_HVLOCK));
return REMOVE_SUCCESS;
}
@ -324,19 +298,12 @@ static target_ulong h_protect(CPUPPCState *env, sPAPREnvironment *spapr,
}
hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
while (!lock_hpte(hpte, HPTE_V_HVLOCK)) {
/* We have no real concurrency in qemu soft-emulation, so we
* will never actually have a contested lock */
assert(0);
}
v = ldq_p(hpte);
r = ldq_p(hpte + (HASH_PTE_SIZE_64/2));
if ((v & HPTE_V_VALID) == 0 ||
((flags & H_AVPN) && (v & ~0x7fULL) != avpn)) {
stq_p(hpte, v & ~HPTE_V_HVLOCK);
assert(!(ldq_p(hpte) & HPTE_V_HVLOCK));
return H_NOT_FOUND;
}
@ -350,8 +317,7 @@ static target_ulong h_protect(CPUPPCState *env, sPAPREnvironment *spapr,
ppc_tlb_invalidate_one(env, rb);
stq_p(hpte + (HASH_PTE_SIZE_64/2), r);
/* Don't need a memory barrier, due to qemu's global lock */
stq_p(hpte, v & ~HPTE_V_HVLOCK);
assert(!(ldq_p(hpte) & HPTE_V_HVLOCK));
stq_p(hpte, v);
return H_SUCCESS;
}
@ -544,6 +510,8 @@ static target_ulong h_cede(CPUPPCState *env, sPAPREnvironment *spapr,
hreg_compute_hflags(env);
if (!cpu_has_work(env)) {
env->halted = 1;
env->exception_index = EXCP_HLT;
env->exit_request = 1;
}
return H_SUCCESS;
}
@ -713,11 +681,6 @@ void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn)
target_ulong spapr_hypercall(CPUPPCState *env, target_ulong opcode,
target_ulong *args)
{
if (msr_pr) {
hcall_dprintf("Hypercall made with MSR[PR]=1\n");
return H_PRIVILEGE;
}
if ((opcode <= MAX_HCALL_OPCODE)
&& ((opcode & 0x3) == 0)) {
spapr_hcall_fn fn = papr_hypercall_table[opcode / 4];

24
hw/spapr_iommu.c
View File

@ -42,6 +42,7 @@ struct sPAPRTCETable {
uint32_t liobn;
uint32_t window_size;
sPAPRTCE *table;
bool bypass;
int fd;
QLIST_ENTRY(sPAPRTCETable) list;
};
@ -78,6 +79,12 @@ static int spapr_tce_translate(DMAContext *dma,
DMA_ADDR_FMT "\n", tcet->liobn, addr);
#endif
if (tcet->bypass) {
*paddr = addr;
*len = (target_phys_addr_t)-1;
return 0;
}
/* Check if we are in bound */
if (addr >= tcet->window_size) {
#ifdef DEBUG_TCE
@ -162,6 +169,23 @@ void spapr_tce_free(DMAContext *dma)
}
}
void spapr_tce_set_bypass(DMAContext *dma, bool bypass)
{
sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma);
tcet->bypass = bypass;
}
void spapr_tce_reset(DMAContext *dma)
{
sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma);
size_t table_size = (tcet->window_size >> SPAPR_TCE_PAGE_SHIFT)
* sizeof(sPAPRTCE);
tcet->bypass = false;
memset(tcet->table, 0, table_size);
}
static target_ulong put_tce_emu(sPAPRTCETable *tcet, target_ulong ioba,
target_ulong tce)
{

12
hw/spapr_pci.c
View File

@ -351,7 +351,7 @@ static void rtas_ibm_change_msi(sPAPREnvironment *spapr,
/* There is no cached config, allocate MSIs */
if (!phb->msi_table[ndev].nvec) {
irq = spapr_allocate_irq_block(req_num, XICS_MSI);
irq = spapr_allocate_irq_block(req_num, true);
if (irq < 0) {
fprintf(stderr, "Cannot allocate MSIs for device#%d", ndev);
rtas_st(rets, 0, -1); /* Hardware error */
@ -595,6 +595,15 @@ static int spapr_phb_init(SysBusDevice *s)
return 0;
}
static void spapr_phb_reset(DeviceState *qdev)
{
SysBusDevice *s = sysbus_from_qdev(qdev);
sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
/* Reset the IOMMU state */
spapr_tce_reset(sphb->dma);
}
static Property spapr_phb_properties[] = {
DEFINE_PROP_HEX64("buid", sPAPRPHBState, buid, 0),
DEFINE_PROP_STRING("busname", sPAPRPHBState, busname),
@ -613,6 +622,7 @@ static void spapr_phb_class_init(ObjectClass *klass, void *data)
sdc->init = spapr_phb_init;
dc->props = spapr_phb_properties;
dc->reset = spapr_phb_reset;
}
static const TypeInfo spapr_phb_info = {

5
hw/spapr_rtas.c
View File

@ -184,6 +184,11 @@ static void rtas_start_cpu(sPAPREnvironment *spapr,
return;
}
/* This will make sure qemu state is up to date with kvm, and
* mark it dirty so our changes get flushed back before the
* new cpu enters */
kvm_cpu_synchronize_state(env);
env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME);
env->nip = start;
env->gpr[3] = r3;

35
hw/spapr_vio.c
View File

@ -316,17 +316,10 @@ int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq)
static void spapr_vio_quiesce_one(VIOsPAPRDevice *dev)
{
VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev);
uint32_t liobn = SPAPR_VIO_BASE_LIOBN | dev->reg;
if (dev->dma) {
spapr_tce_free(dev->dma);
spapr_tce_reset(dev->dma);
}
dev->dma = spapr_tce_new_dma_context(liobn, pc->rtce_window_size);
dev->crq.qladdr = 0;
dev->crq.qsize = 0;
dev->crq.qnext = 0;
free_crq(dev);
}
static void rtas_set_tce_bypass(sPAPREnvironment *spapr, uint32_t token,
@ -348,16 +341,14 @@ static void rtas_set_tce_bypass(sPAPREnvironment *spapr, uint32_t token,
rtas_st(rets, 0, -3);
return;
}
if (enable) {
spapr_tce_free(dev->dma);
dev->dma = NULL;
} else {
VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev);
uint32_t liobn = SPAPR_VIO_BASE_LIOBN | dev->reg;
dev->dma = spapr_tce_new_dma_context(liobn, pc->rtce_window_size);
if (!dev->dma) {
rtas_st(rets, 0, -3);
return;
}
spapr_tce_set_bypass(dev->dma, !!enable);
rtas_st(rets, 0, 0);
}
@ -409,9 +400,10 @@ static void spapr_vio_busdev_reset(DeviceState *qdev)
VIOsPAPRDevice *dev = DO_UPCAST(VIOsPAPRDevice, qdev, qdev);
VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev);
if (dev->crq.qsize) {
free_crq(dev);
}
/* Shut down the request queue and TCEs if necessary */
spapr_vio_quiesce_one(dev);
dev->signal_state = 0;
if (pc->reset) {
pc->reset(dev);
@ -422,7 +414,6 @@ static int spapr_vio_busdev_init(DeviceState *qdev)
{
VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev;
VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev);
uint32_t liobn;
char *id;
if (dev->reg != -1) {
@ -464,8 +455,10 @@ static int spapr_vio_busdev_init(DeviceState *qdev)
return -1;
}
liobn = SPAPR_VIO_BASE_LIOBN | dev->reg;
if (pc->rtce_window_size) {
uint32_t liobn = SPAPR_VIO_BASE_LIOBN | dev->reg;
dev->dma = spapr_tce_new_dma_context(liobn, pc->rtce_window_size);
}
return pc->init(dev);
}

2
hw/spapr_vio.h
View File

@ -60,7 +60,6 @@ typedef struct VIOsPAPRDeviceClass {
struct VIOsPAPRDevice {
DeviceState qdev;
uint32_t reg;
uint32_t flags;
uint32_t irq;
target_ulong signal_state;
VIOsPAPR_CRQ crq;
@ -132,7 +131,6 @@ void spapr_vscsi_create(VIOsPAPRBus *bus);
VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus);
int spapr_tce_set_bypass(uint32_t unit, uint32_t enable);
void spapr_vio_quiesce(void);
#endif /* _HW_SPAPR_VIO_H */

114
hw/xics.c
View File

@ -165,11 +165,12 @@ struct ics_irq_state {
int server;
uint8_t priority;
uint8_t saved_priority;
enum xics_irq_type type;
int asserted:1;
int sent:1;
int rejected:1;
int masked_pending:1;
#define XICS_STATUS_ASSERTED 0x1
#define XICS_STATUS_SENT 0x2
#define XICS_STATUS_REJECTED 0x4
#define XICS_STATUS_MASKED_PENDING 0x8
uint8_t status;
bool lsi;
};
struct ics_state {
@ -191,8 +192,8 @@ static void resend_msi(struct ics_state *ics, int srcno)
struct ics_irq_state *irq = ics->irqs + srcno;
/* FIXME: filter by server#? */
if (irq->rejected) {
irq->rejected = 0;
if (irq->status & XICS_STATUS_REJECTED) {
irq->status &= ~XICS_STATUS_REJECTED;
if (irq->priority != 0xff) {
icp_irq(ics->icp, irq->server, srcno + ics->offset,
irq->priority);
@ -204,8 +205,10 @@ static void resend_lsi(struct ics_state *ics, int srcno)
{
struct ics_irq_state *irq = ics->irqs + srcno;
if ((irq->priority != 0xff) && irq->asserted && !irq->sent) {
irq->sent = 1;
if ((irq->priority != 0xff)
&& (irq->status & XICS_STATUS_ASSERTED)
&& !(irq->status & XICS_STATUS_SENT)) {
irq->status |= XICS_STATUS_SENT;
icp_irq(ics->icp, irq->server, srcno + ics->offset, irq->priority);
}
}
@ -216,7 +219,7 @@ static void set_irq_msi(struct ics_state *ics, int srcno, int val)
if (val) {
if (irq->priority == 0xff) {
irq->masked_pending = 1;
irq->status |= XICS_STATUS_MASKED_PENDING;
/* masked pending */ ;
} else {
icp_irq(ics->icp, irq->server, srcno + ics->offset, irq->priority);
@ -228,7 +231,11 @@ static void set_irq_lsi(struct ics_state *ics, int srcno, int val)
{
struct ics_irq_state *irq = ics->irqs + srcno;
irq->asserted = val;
if (val) {
irq->status |= XICS_STATUS_ASSERTED;
} else {
irq->status &= ~XICS_STATUS_ASSERTED;
}
resend_lsi(ics, srcno);
}
@ -237,7 +244,7 @@ static void ics_set_irq(void *opaque, int srcno, int val)
struct ics_state *ics = (struct ics_state *)opaque;
struct ics_irq_state *irq = ics->irqs + srcno;
if (irq->type == XICS_LSI) {
if (irq->lsi) {
set_irq_lsi(ics, srcno, val);
} else {
set_irq_msi(ics, srcno, val);
@ -248,11 +255,12 @@ static void write_xive_msi(struct ics_state *ics, int srcno)
{
struct ics_irq_state *irq = ics->irqs + srcno;
if (!irq->masked_pending || (irq->priority == 0xff)) {
if (!(irq->status & XICS_STATUS_MASKED_PENDING)
|| (irq->priority == 0xff)) {
return;
}
irq->masked_pending = 0;
irq->status &= ~XICS_STATUS_MASKED_PENDING;
icp_irq(ics->icp, irq->server, srcno + ics->offset, irq->priority);
}
@ -262,15 +270,16 @@ static void write_xive_lsi(struct ics_state *ics, int srcno)
}
static void ics_write_xive(struct ics_state *ics, int nr, int server,
uint8_t priority)
uint8_t priority, uint8_t saved_priority)
{
int srcno = nr - ics->offset;
struct ics_irq_state *irq = ics->irqs + srcno;
irq->server = server;
irq->priority = priority;
irq->saved_priority = saved_priority;
if (irq->type == XICS_LSI) {
if (irq->lsi) {
write_xive_lsi(ics, srcno);
} else {
write_xive_msi(ics, srcno);
@ -281,8 +290,8 @@ static void ics_reject(struct ics_state *ics, int nr)
{
struct ics_irq_state *irq = ics->irqs + nr - ics->offset;
irq->rejected = 1; /* Irrelevant but harmless for LSI */
irq->sent = 0; /* Irrelevant but harmless for MSI */
irq->status |= XICS_STATUS_REJECTED; /* Irrelevant but harmless for LSI */
irq->status &= ~XICS_STATUS_SENT; /* Irrelevant but harmless for MSI */
}
static void ics_resend(struct ics_state *ics)
@ -293,7 +302,7 @@ static void ics_resend(struct ics_state *ics)
struct ics_irq_state *irq = ics->irqs + i;
/* FIXME: filter by server#? */
if (irq->type == XICS_LSI) {
if (irq->lsi) {
resend_lsi(ics, i);
} else {
resend_msi(ics, i);
@ -306,8 +315,8 @@ static void ics_eoi(struct ics_state *ics, int nr)
int srcno = nr - ics->offset;
struct ics_irq_state *irq = ics->irqs + srcno;
if (irq->type == XICS_LSI) {
irq->sent = 0;
if (irq->lsi) {
irq->status &= ~XICS_STATUS_SENT;
}
}
@ -325,14 +334,12 @@ qemu_irq xics_get_qirq(struct icp_state *icp, int irq)
return icp->ics->qirqs[irq - icp->ics->offset];
}
void xics_set_irq_type(struct icp_state *icp, int irq,
enum xics_irq_type type)
void xics_set_irq_type(struct icp_state *icp, int irq, bool lsi)
{
assert((irq >= icp->ics->offset)
&& (irq < (icp->ics->offset + icp->ics->nr_irqs)));
assert((type == XICS_MSI) || (type == XICS_LSI));
icp->ics->irqs[irq - icp->ics->offset].type = type;
icp->ics->irqs[irq - icp->ics->offset].lsi = lsi;
}
static target_ulong h_cppr(CPUPPCState *env, sPAPREnvironment *spapr,
@ -399,7 +406,7 @@ static void rtas_set_xive(sPAPREnvironment *spapr, uint32_t token,
return;
}
ics_write_xive(ics, nr, server, priority);
ics_write_xive(ics, nr, server, priority, priority);
rtas_st(rets, 0, 0); /* Success */
}
@ -447,14 +454,8 @@ static void rtas_int_off(sPAPREnvironment *spapr, uint32_t token,
return;
}
/* This is a NOP for now, since the described PAPR semantics don't
* seem to gel with what Linux does */
#if 0
struct ics_irq_state *irq = xics->irqs + (nr - xics->offset);
irq->saved_priority = irq->priority;
ics_write_xive_msi(xics, nr, irq->server, 0xff);
#endif
ics_write_xive(ics, nr, ics->irqs[nr - ics->offset].server, 0xff,
ics->irqs[nr - ics->offset].priority);
rtas_st(rets, 0, 0); /* Success */
}
@ -478,22 +479,40 @@ static void rtas_int_on(sPAPREnvironment *spapr, uint32_t token,
return;
}
/* This is a NOP for now, since the described PAPR semantics don't
* seem to gel with what Linux does */
#if 0
struct ics_irq_state *irq = xics->irqs + (nr - xics->offset);
ics_write_xive_msi(xics, nr, irq->server, irq->saved_priority);
#endif
ics_write_xive(ics, nr, ics->irqs[nr - ics->offset].server,
ics->irqs[nr - ics->offset].saved_priority,
ics->irqs[nr - ics->offset].saved_priority);
rtas_st(rets, 0, 0); /* Success */
}
static void xics_reset(void *opaque)
{
struct icp_state *icp = (struct icp_state *)opaque;
struct ics_state *ics = icp->ics;
int i;
for (i = 0; i < icp->nr_servers; i++) {
icp->ss[i].xirr = 0;
icp->ss[i].pending_priority = 0;
icp->ss[i].mfrr = 0xff;
/* Make all outputs are deasserted */
qemu_set_irq(icp->ss[i].output, 0);
}
for (i = 0; i < ics->nr_irqs; i++) {
/* Reset everything *except* the type */
ics->irqs[i].server = 0;
ics->irqs[i].status = 0;
ics->irqs[i].priority = 0xff;
ics->irqs[i].saved_priority = 0xff;
}
}
struct icp_state *xics_system_init(int nr_irqs)
{
CPUPPCState *env;
int max_server_num;
int i;
struct icp_state *icp;
struct ics_state *ics;
@ -508,10 +527,6 @@ struct icp_state *xics_system_init(int nr_irqs)
icp->nr_servers = max_server_num + 1;
icp->ss = g_malloc0(icp->nr_servers*sizeof(struct icp_server_state));
for (i = 0; i < icp->nr_servers; i++) {
icp->ss[i].mfrr = 0xff;
}
for (env = first_cpu; env != NULL; env = env->next_cpu) {
struct icp_server_state *ss = &icp->ss[env->cpu_index];
@ -539,11 +554,6 @@ struct icp_state *xics_system_init(int nr_irqs)
icp->ics = ics;
ics->icp = icp;
for (i = 0; i < nr_irqs; i++) {
ics->irqs[i].priority = 0xff;
ics->irqs[i].saved_priority = 0xff;
}
ics->qirqs = qemu_allocate_irqs(ics_set_irq, ics, nr_irqs);
spapr_register_hypercall(H_CPPR, h_cppr);
@ -556,5 +566,7 @@ struct icp_state *xics_system_init(int nr_irqs)
spapr_rtas_register("ibm,int-off", rtas_int_off);
spapr_rtas_register("ibm,int-on", rtas_int_on);
qemu_register_reset(xics_reset, icp);
return icp;
}

8
hw/xics.h
View File

@ -31,14 +31,8 @@
struct icp_state;
enum xics_irq_type {
XICS_MSI, /* Message-signalled (edge) interrupt */
XICS_LSI, /* Level-signalled interrupt */
};
qemu_irq xics_get_qirq(struct icp_state *icp, int irq);
void xics_set_irq_type(struct icp_state *icp, int irq,
enum xics_irq_type type);
void xics_set_irq_type(struct icp_state *icp, int irq, bool lsi);
struct icp_state *xics_system_init(int nr_irqs);

1
target-ppc/cpu.h
View File

@ -1079,7 +1079,6 @@ struct CPUPPCState {
int mmu_idx; /* precomputed MMU index to speed up mem accesses */
/* Power management */
int power_mode;
int (*check_pow)(CPUPPCState *env);
#if !defined(CONFIG_USER_ONLY)

113
target-ppc/int_helper.c
View File

@ -287,23 +287,6 @@ target_ulong helper_602_mfrom(target_ulong arg)
for (index = ARRAY_SIZE(r->element)-1; index >= 0; index--)
#endif
/* If X is a NaN, store the corresponding QNaN into RESULT. Otherwise,
* execute the following block. */
#define DO_HANDLE_NAN(result, x) \
if (float32_is_any_nan(x)) { \
CPU_FloatU __f; \
__f.f = x; \
__f.l = __f.l | (1 << 22); /* Set QNaN bit. */ \
result = __f.f; \
} else
#define HANDLE_NAN1(result, x) \
DO_HANDLE_NAN(result, x)
#define HANDLE_NAN2(result, x, y) \
DO_HANDLE_NAN(result, x) DO_HANDLE_NAN(result, y)
#define HANDLE_NAN3(result, x, y, z) \
DO_HANDLE_NAN(result, x) DO_HANDLE_NAN(result, y) DO_HANDLE_NAN(result, z)
/* Saturating arithmetic helpers. */
#define SATCVT(from, to, from_type, to_type, min, max) \
static inline to_type cvt##from##to(from_type x, int *sat) \
@ -409,15 +392,29 @@ VARITH(uwm, u32)
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { \
r->f[i] = func(a->f[i], b->f[i], &env->vec_status); \
} \
} \
}
VARITHFP(addfp, float32_add)
VARITHFP(subfp, float32_sub)
VARITHFP(minfp, float32_min)
VARITHFP(maxfp, float32_max)
#undef VARITHFP
#define VARITHFPFMA(suffix, type) \
void helper_v##suffix(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, \
ppc_avr_t *b, ppc_avr_t *c) \
{ \
int i; \
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
r->f[i] = float32_muladd(a->f[i], c->f[i], b->f[i], \
type, &env->vec_status); \
} \
}
VARITHFPFMA(maddfp, 0);
VARITHFPFMA(nmsubfp, float_muladd_negate_result | float_muladd_negate_c);
#undef VARITHFPFMA
#define VARITHSAT_CASE(type, op, cvt, element) \
{ \
type result = (type)a->element[i] op (type)b->element[i]; \
@ -649,27 +646,6 @@ VCT(uxs, cvtsduw, u32)
VCT(sxs, cvtsdsw, s32)
#undef VCT
void helper_vmaddfp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,
ppc_avr_t *c)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
HANDLE_NAN3(r->f[i], a->f[i], b->f[i], c->f[i]) {
/* Need to do the computation in higher precision and round
* once at the end. */
float64 af, bf, cf, t;
af = float32_to_float64(a->f[i], &env->vec_status);
bf = float32_to_float64(b->f[i], &env->vec_status);
cf = float32_to_float64(c->f[i], &env->vec_status);
t = float64_mul(af, cf, &env->vec_status);
t = float64_add(t, bf, &env->vec_status);
r->f[i] = float64_to_float32(t, &env->vec_status);
}
}
}
void helper_vmhaddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b, ppc_avr_t *c)
{
@ -730,27 +706,6 @@ VMINMAX(uw, u32)
#undef VMINMAX_DO
#undef VMINMAX
#define VMINMAXFP(suffix, rT, rF) \
void helper_v##suffix(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, \
ppc_avr_t *b) \
{ \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { \
if (float32_lt_quiet(a->f[i], b->f[i], \
&env->vec_status)) { \
r->f[i] = rT->f[i]; \
} else { \
r->f[i] = rF->f[i]; \
} \
} \
} \
}
VMINMAXFP(minfp, a, b)
VMINMAXFP(maxfp, b, a)
#undef VMINMAXFP
void helper_vmladduhm(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
{
int i;
@ -930,28 +885,6 @@ VMUL(uh, u16, u32)
#undef VMUL_DO
#undef VMUL
void helper_vnmsubfp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b, ppc_avr_t *c)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
HANDLE_NAN3(r->f[i], a->f[i], b->f[i], c->f[i]) {
/* Need to do the computation is higher precision and round
* once at the end. */
float64 af, bf, cf, t;
af = float32_to_float64(a->f[i], &env->vec_status);
bf = float32_to_float64(b->f[i], &env->vec_status);
cf = float32_to_float64(c->f[i], &env->vec_status);
t = float64_mul(af, cf, &env->vec_status);
t = float64_sub(t, bf, &env->vec_status);
t = float64_chs(t);
r->f[i] = float64_to_float32(t, &env->vec_status);
}
}
}
void helper_vperm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,
ppc_avr_t *c)
{
@ -1039,11 +972,9 @@ void helper_vrefp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *b)
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
HANDLE_NAN1(r->f[i], b->f[i]) {
r->f[i] = float32_div(float32_one, b->f[i], &env->vec_status);
}
}
}
#define VRFI(suffix, rounding) \
void helper_vrfi##suffix(CPUPPCState *env, ppc_avr_t *r, \
@ -1054,10 +985,8 @@ void helper_vrefp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *b)
\
set_float_rounding_mode(rounding, &s); \
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
HANDLE_NAN1(r->f[i], b->f[i]) { \
r->f[i] = float32_round_to_int (b->f[i], &s); \
} \
} \
}
VRFI(n, float_round_nearest_even)
VRFI(m, float_round_down)
@ -1089,13 +1018,11 @@ void helper_vrsqrtefp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *b)
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
HANDLE_NAN1(r->f[i], b->f[i]) {
float32 t = float32_sqrt(b->f[i], &env->vec_status);
r->f[i] = float32_div(float32_one, t, &env->vec_status);
}
}
}
void helper_vsel(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,
ppc_avr_t *c)
@ -1109,22 +1036,18 @@ void helper_vexptefp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *b)
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
HANDLE_NAN1(r->f[i], b->f[i]) {
r->f[i] = float32_exp2(b->f[i], &env->vec_status);
}
}
}
void helper_vlogefp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *b)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
HANDLE_NAN1(r->f[i], b->f[i]) {
r->f[i] = float32_log2(b->f[i], &env->vec_status);
}
}
}
#if defined(HOST_WORDS_BIGENDIAN)
#define LEFT 0
@ -1473,10 +1396,6 @@ VUPK(lsh, s32, s16, UPKLO)
#undef UPKHI
#undef UPKLO
#undef DO_HANDLE_NAN
#undef HANDLE_NAN1
#undef HANDLE_NAN2
#undef HANDLE_NAN3
#undef VECTOR_FOR_INORDER_I
#undef HI_IDX
#undef LO_IDX

139
target-ppc/kvm.c
View File

@ -60,6 +60,7 @@ static int cap_booke_sregs;
static int cap_ppc_smt;
static int cap_ppc_rma;
static int cap_spapr_tce;
static int cap_hior;
/* XXX We have a race condition where we actually have a level triggered
* interrupt, but the infrastructure can't expose that yet, so the guest
@ -86,6 +87,7 @@ int kvm_arch_init(KVMState *s)
cap_ppc_smt = kvm_check_extension(s, KVM_CAP_PPC_SMT);
cap_ppc_rma = kvm_check_extension(s, KVM_CAP_PPC_RMA);
cap_spapr_tce = kvm_check_extension(s, KVM_CAP_SPAPR_TCE);
cap_hior = kvm_check_extension(s, KVM_CAP_PPC_HIOR);
if (!cap_interrupt_level) {
fprintf(stderr, "KVM: Couldn't find level irq capability. Expect the "
@ -469,6 +471,54 @@ int kvm_arch_put_registers(CPUPPCState *env, int level)
env->tlb_dirty = false;
}
if (cap_segstate && (level >= KVM_PUT_RESET_STATE)) {
struct kvm_sregs sregs;
sregs.pvr = env->spr[SPR_PVR];
sregs.u.s.sdr1 = env->spr[SPR_SDR1];
/* Sync SLB */
#ifdef TARGET_PPC64
for (i = 0; i < 64; i++) {
sregs.u.s.ppc64.slb[i].slbe = env->slb[i].esid;
sregs.u.s.ppc64.slb[i].slbv = env->slb[i].vsid;
}
#endif
/* Sync SRs */
for (i = 0; i < 16; i++) {
sregs.u.s.ppc32.sr[i] = env->sr[i];
}
/* Sync BATs */
for (i = 0; i < 8; i++) {
/* Beware. We have to swap upper and lower bits here */
sregs.u.s.ppc32.dbat[i] = ((uint64_t)env->DBAT[0][i] << 32)
| env->DBAT[1][i];
sregs.u.s.ppc32.ibat[i] = ((uint64_t)env->IBAT[0][i] << 32)
| env->IBAT[1][i];
}
ret = kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
if (ret) {
return ret;
}
}
if (cap_hior && (level >= KVM_PUT_RESET_STATE)) {
uint64_t hior = env->spr[SPR_HIOR];
struct kvm_one_reg reg = {
.id = KVM_REG_PPC_HIOR,
.addr = (uintptr_t) &hior,
};
ret = kvm_vcpu_ioctl(env, KVM_SET_ONE_REG, &reg);
if (ret) {
return ret;
}
}
return ret;
}
@ -946,59 +996,22 @@ int kvmppc_get_hypercall(CPUPPCState *env, uint8_t *buf, int buf_len)
void kvmppc_set_papr(CPUPPCState *env)
{
struct kvm_enable_cap cap = {};
struct kvm_one_reg reg = {};
struct kvm_sregs sregs = {};
int ret;
uint64_t hior = env->spr[SPR_HIOR];
cap.cap = KVM_CAP_PPC_PAPR;
ret = kvm_vcpu_ioctl(env, KVM_ENABLE_CAP, &cap);
if (ret) {
goto fail;
}
/*
* XXX We set HIOR here. It really should be a qdev property of
* the CPU node, but we don't have CPUs converted to qdev yet.
*
* Once we have qdev CPUs, move HIOR to a qdev property and
* remove this chunk.
*/
reg.id = KVM_REG_PPC_HIOR;
reg.addr = (uintptr_t)&hior;
ret = kvm_vcpu_ioctl(env, KVM_SET_ONE_REG, &reg);
if (ret) {
fprintf(stderr, "Couldn't set HIOR. Maybe you're running an old \n"
"kernel with support for HV KVM but no PAPR PR \n"
"KVM in which case things will work. If they don't \n"
"please update your host kernel!\n");
}
/* Set SDR1 so kernel space finds the HTAB */
ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs);
if (ret) {
goto fail;
}
sregs.u.s.sdr1 = env->spr[SPR_SDR1];
ret = kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
if (ret) {
goto fail;
}
return;
fail:
cpu_abort(env, "This KVM version does not support PAPR\n");
}
}
int kvmppc_smt_threads(void)
{
return cap_ppc_smt ? cap_ppc_smt : 1;
}
#ifdef TARGET_PPC64
off_t kvmppc_alloc_rma(const char *name, MemoryRegion *sysmem)
{
void *rma;
@ -1042,6 +1055,16 @@ off_t kvmppc_alloc_rma(const char *name, MemoryRegion *sysmem)
return size;
}
uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift)
{
if (cap_ppc_rma >= 2) {
return current_size;
}
return MIN(current_size,
getrampagesize() << (hash_shift - 7));
}
#endif
void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t window_size, int *pfd)
{
struct kvm_create_spapr_tce args = {
@ -1101,6 +1124,44 @@ int kvmppc_remove_spapr_tce(void *table, int fd, uint32_t window_size)
return 0;
}
int kvmppc_reset_htab(int shift_hint)
{
uint32_t shift = shift_hint;
if (!kvm_enabled()) {
/* Full emulation, tell caller to allocate htab itself */
return 0;
}
if (kvm_check_extension(kvm_state, KVM_CAP_PPC_ALLOC_HTAB)) {
int ret;
ret = kvm_vm_ioctl(kvm_state, KVM_PPC_ALLOCATE_HTAB, &shift);
if (ret == -ENOTTY) {
/* At least some versions of PR KVM advertise the
* capability, but don't implement the ioctl(). Oops.
* Return 0 so that we allocate the htab in qemu, as is
* correct for PR. */
return 0;
} else if (ret < 0) {
return ret;
}
return shift;
}
/* We have a kernel that predates the htab reset calls. For PR
* KVM, we need to allocate the htab ourselves, for an HV KVM of
* this era, it has allocated a 16MB fixed size hash table
* already. Kernels of this era have the GET_PVINFO capability
* only on PR, so we use this hack to determine the right
* answer */
if (kvm_check_extension(kvm_state, KVM_CAP_PPC_GET_PVINFO)) {
/* PR - tell caller to allocate htab */
return 0;
} else {
/* HV - assume 16MB kernel allocated htab */
return 24;
}
}
static inline uint32_t mfpvr(void)
{
uint32_t pvr;

19
target-ppc/kvm_ppc.h
View File

@ -27,6 +27,8 @@ int kvmppc_smt_threads(void);
off_t kvmppc_alloc_rma(const char *name, MemoryRegion *sysmem);
void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t window_size, int *pfd);
int kvmppc_remove_spapr_tce(void *table, int pfd, uint32_t window_size);
int kvmppc_reset_htab(int shift_hint);
uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift);
#endif /* !CONFIG_USER_ONLY */
const ppc_def_t *kvmppc_host_cpu_def(void);
int kvmppc_fixup_cpu(CPUPPCState *env);
@ -94,6 +96,23 @@ static inline int kvmppc_remove_spapr_tce(void *table, int pfd,
{
return -1;
}
static inline int kvmppc_reset_htab(int shift_hint)
{
return -1;
}
static inline uint64_t kvmppc_rma_size(uint64_t current_size,
unsigned int hash_shift)
{
return ram_size;
}
static inline int kvmppc_update_sdr1(CPUPPCState *env)
{
return 0;
}
#endif /* !CONFIG_USER_ONLY */
static inline const ppc_def_t *kvmppc_host_cpu_def(void)

4
target-ppc/machine.c
View File

@ -82,7 +82,7 @@ void cpu_save(QEMUFile *f, void *opaque)
qemu_put_betls(f, &env->hflags);
qemu_put_betls(f, &env->hflags_nmsr);
qemu_put_sbe32s(f, &env->mmu_idx);
qemu_put_sbe32s(f, &env->power_mode);
qemu_put_sbe32(f, 0);
}
int cpu_load(QEMUFile *f, void *opaque, int version_id)
@ -167,7 +167,7 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id)
qemu_get_betls(f, &env->hflags);
qemu_get_betls(f, &env->hflags_nmsr);
qemu_get_sbe32s(f, &env->mmu_idx);
qemu_get_sbe32s(f, &env->power_mode);
qemu_get_sbe32(f); /* Discard unused power_mode */
return 0;
}

8
target-ppc/translate_init.c
View File

@ -10423,6 +10423,14 @@ static void ppc_cpu_reset(CPUState *s)
env->pending_interrupts = 0;
env->exception_index = POWERPC_EXCP_NONE;
env->error_code = 0;
#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
env->vpa = 0;
env->slb_shadow = 0;
env->dispatch_trace_log = 0;
env->dtl_size = 0;
#endif /* TARGET_PPC64 */
/* Flush all TLBs */
tlb_flush(env, 1);
}