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target-arm queue:

Browse Source 
* support REFCNT register on integrator/cp board
  * implement the A9MP's global timer
  * add the 'virt' platform
  * support '-cpu host' on KVM/ARM
  * Cadence GEM ethernet device bugfixes
  * Implement 32-bit ARMv8 VSEL, VMAXNM, VMINNM
  * fix TTBCR write masking
  * update 32 bit decoder to use new qemu_ld/st TCG opcodes
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Merge remote-tracking branch 'pmaydell/tags/pull-target-arm-20131210' into staging

target-arm queue:
 * support REFCNT register on integrator/cp board
 * implement the A9MP's global timer
 * add the 'virt' platform
 * support '-cpu host' on KVM/ARM
 * Cadence GEM ethernet device bugfixes
 * Implement 32-bit ARMv8 VSEL, VMAXNM, VMINNM
 * fix TTBCR write masking
 * update 32 bit decoder to use new qemu_ld/st TCG opcodes

# gpg: Signature made Tue 10 Dec 2013 06:22:01 AM PST using RSA key ID 14360CDE
# gpg: Can't check signature: public key not found

# By Peter Crosthwaite (16) and others
# Via Peter Maydell
* pmaydell/tags/pull-target-arm-20131210: (37 commits)
  target-arm: fix TTBCR write masking
  target-arm: Use new qemu_ld/st opcodes
  target-arm: Implement ARMv8 SIMD VMAXNM and VMINNM instructions.
  target-arm: Implement ARMv8 FP VMAXNM and VMINNM instructions.
  softfloat: Add minNum() and maxNum() functions to softfloat.
  softfloat: Remove unused argument from MINMAX macro.
  target-arm: Implement ARMv8 VSEL instruction.
  target-arm: Move call to disas_vfp_insn out of disas_coproc_insn.
  net/cadence_gem: Don't rx packets when no rx buffer available
  net/cadence_gem: Improve can_receive debug printfery
  net/cadence_gem: Fix register w1c logic
  net/cadence_gem: Fix small packet FCS stripping
  net/cadence_gem: Fix rx multi-fragment packets
  net/cadence_gem: Add missing VMSTATE_END_OF_LIST
  net/cadence_gem: Implement SAR (de)activation
  net/cadence_gem: Implement SAR match bit in rx desc
  net/cadence_gem: Implement RX descriptor match mode flags
  net/cadence_gem: Prefetch rx descriptors ASAP
  net/cadence_gem: simplify rx buf descriptor walking
  net/cadence_gem: Don't assert against 0 buffer address
  ...

Message-id: 1386686613-2390-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
This commit is contained in:
Anthony Liguori 2013-12-10 16:13:32 -08:00
commit 1ead3ed555
24 changed files with 1928 additions and 207 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
default-configs/arm-softmmu.mak
View File

@ -41,6 +41,7 @@ CONFIG_ARM_GIC=y
CONFIG_ARM_GIC_KVM=$(CONFIG_KVM)
CONFIG_ARM_TIMER=y
CONFIG_ARM_MPTIMER=y
CONFIG_A9_GTIMER=y
CONFIG_PL011=y
CONFIG_PL022=y
CONFIG_PL031=y

4
device_tree.c
View File

@ -41,6 +41,10 @@ void *create_device_tree(int *sizep)
if (ret < 0) {
goto fail;
}
ret = fdt_finish_reservemap(fdt);
if (ret < 0) {
goto fail;
}
ret = fdt_begin_node(fdt, "");
if (ret < 0) {
goto fail;

38
fpu/softfloat.c
View File

@ -6705,10 +6705,17 @@ int float128_compare_quiet( float128 a, float128 b STATUS_PARAM )
/* min() and max() functions. These can't be implemented as
* 'compare and pick one input' because that would mishandle
* NaNs and +0 vs -0.
*
* minnum() and maxnum() functions. These are similar to the min()
* and max() functions but if one of the arguments is a QNaN and
* the other is numerical then the numerical argument is returned.
* minnum() and maxnum correspond to the IEEE 754-2008 minNum()
* and maxNum() operations. min() and max() are the typical min/max
* semantics provided by many CPUs which predate that specification.
*/
#define MINMAX(s, nan_exp) \
#define MINMAX(s) \
INLINE float ## s float ## s ## _minmax(float ## s a, float ## s b, \
int ismin STATUS_PARAM ) \
int ismin, int isieee STATUS_PARAM) \
{ \
flag aSign, bSign; \
uint ## s ## _t av, bv; \
@ -6716,6 +6723,15 @@ INLINE float ## s float ## s ## _minmax(float ## s a, float ## s b, \
b = float ## s ## _squash_input_denormal(b STATUS_VAR); \
if (float ## s ## _is_any_nan(a) || \
float ## s ## _is_any_nan(b)) { \
if (isieee) { \
if (float ## s ## _is_quiet_nan(a) && \
!float ## s ##_is_any_nan(b)) { \
return b; \
} else if (float ## s ## _is_quiet_nan(b) && \
!float ## s ## _is_any_nan(a)) { \
return a; \
} \
} \
return propagateFloat ## s ## NaN(a, b STATUS_VAR); \
} \
aSign = extractFloat ## s ## Sign(a); \
@ -6739,16 +6755,26 @@ INLINE float ## s float ## s ## _minmax(float ## s a, float ## s b, \
\
float ## s float ## s ## _min(float ## s a, float ## s b STATUS_PARAM) \
{ \
return float ## s ## _minmax(a, b, 1 STATUS_VAR); \
return float ## s ## _minmax(a, b, 1, 0 STATUS_VAR); \
} \
\
float ## s float ## s ## _max(float ## s a, float ## s b STATUS_PARAM) \
{ \
return float ## s ## _minmax(a, b, 0 STATUS_VAR); \
return float ## s ## _minmax(a, b, 0, 0 STATUS_VAR); \
} \
\
float ## s float ## s ## _minnum(float ## s a, float ## s b STATUS_PARAM) \
{ \
return float ## s ## _minmax(a, b, 1, 1 STATUS_VAR); \
} \
\
float ## s float ## s ## _maxnum(float ## s a, float ## s b STATUS_PARAM) \
{ \
return float ## s ## _minmax(a, b, 0, 1 STATUS_VAR); \
}
MINMAX(32, 0xff)
MINMAX(64, 0x7ff)
MINMAX(32)
MINMAX(64)
/* Multiply A by 2 raised to the power N. */

2
hw/arm/Makefile.objs
View File

@ -1,7 +1,7 @@
obj-y += boot.o collie.o exynos4_boards.o gumstix.o highbank.o
obj-y += integratorcp.o kzm.o mainstone.o musicpal.o nseries.o
obj-y += omap_sx1.o palm.o realview.o spitz.o stellaris.o
obj-y += tosa.o versatilepb.o vexpress.o xilinx_zynq.o z2.o
obj-y += tosa.o versatilepb.o vexpress.o virt.o xilinx_zynq.o z2.o
obj-y += armv7m.o exynos4210.o pxa2xx.o pxa2xx_gpio.o pxa2xx_pic.o
obj-y += omap1.o omap2.o strongarm.o

32
hw/arm/boot.c
View File

@ -228,23 +228,31 @@ static void set_kernel_args_old(const struct arm_boot_info *info)
static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo)
{
void *fdt = NULL;
char *filename;
int size, rc;
uint32_t acells, scells;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename);
if (!filename) {
fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename);
goto fail;
}
if (binfo->dtb_filename) {
char *filename;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename);
if (!filename) {
fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename);
goto fail;
}
fdt = load_device_tree(filename, &size);
if (!fdt) {
fprintf(stderr, "Couldn't open dtb file %s\n", filename);
fdt = load_device_tree(filename, &size);
if (!fdt) {
fprintf(stderr, "Couldn't open dtb file %s\n", filename);
g_free(filename);
goto fail;
}
g_free(filename);
goto fail;
} else if (binfo->get_dtb) {
fdt = binfo->get_dtb(binfo, &size);
if (!fdt) {
fprintf(stderr, "Board was unable to create a dtb blob\n");
goto fail;
}
}
g_free(filename);
acells = qemu_devtree_getprop_cell(fdt, "/", "#address-cells");
scells = qemu_devtree_getprop_cell(fdt, "/", "#size-cells");
@ -438,7 +446,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
/* for device tree boot, we pass the DTB directly in r2. Otherwise
* we point to the kernel args.
*/
if (info->dtb_filename) {
if (info->dtb_filename || info->get_dtb) {
/* Place the DTB after the initrd in memory. Note that some
* kernels will trash anything in the 4K page the initrd
* ends in, so make sure the DTB isn't caught up in that.

13
hw/arm/integratorcp.c
View File

@ -36,6 +36,7 @@ typedef struct IntegratorCMState {
uint32_t cm_init;
uint32_t cm_flags;
uint32_t cm_nvflags;
uint32_t cm_refcnt_offset;
uint32_t int_level;
uint32_t irq_enabled;
uint32_t fiq_enabled;
@ -82,9 +83,13 @@ static uint64_t integratorcm_read(void *opaque, hwaddr offset,
return s->cm_sdram;
case 9: /* CM_INIT */
return s->cm_init;
case 10: /* CM_REFCT */
/* ??? High frequency timer. */
hw_error("integratorcm_read: CM_REFCT");
case 10: /* CM_REFCNT */
/* This register, CM_REFCNT, provides a 32-bit count value.
* The count increments at the fixed reference clock frequency of 24MHz
* and can be used as a real-time counter.
*/
return (uint32_t)muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 24,
1000) - s->cm_refcnt_offset;
case 12: /* CM_FLAGS */
return s->cm_flags;
case 14: /* CM_NVFLAGS */
@ -257,6 +262,8 @@ static int integratorcm_init(SysBusDevice *dev)
}
memcpy(integrator_spd + 73, "QEMU-MEMORY", 11);
s->cm_init = 0x00000112;
s->cm_refcnt_offset = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 24,
1000);
memory_region_init_ram(&s->flash, OBJECT(s), "integrator.flash", 0x100000);
vmstate_register_ram_global(&s->flash);

452
hw/arm/virt.c Normal file
View File

@ -0,0 +1,452 @@
/*
* ARM mach-virt emulation
*
* Copyright (c) 2013 Linaro Limited
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* Emulate a virtual board which works by passing Linux all the information
* it needs about what devices are present via the device tree.
* There are some restrictions about what we can do here:
* + we can only present devices whose Linux drivers will work based
* purely on the device tree with no platform data at all
* + we want to present a very stripped-down minimalist platform,
* both because this reduces the security attack surface from the guest
* and also because it reduces our exposure to being broken when
* the kernel updates its device tree bindings and requires further
* information in a device binding that we aren't providing.
* This is essentially the same approach kvmtool uses.
*/
#include "hw/sysbus.h"
#include "hw/arm/arm.h"
#include "hw/arm/primecell.h"
#include "hw/devices.h"
#include "net/net.h"
#include "sysemu/device_tree.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "hw/boards.h"
#include "exec/address-spaces.h"
#include "qemu/bitops.h"
#include "qemu/error-report.h"
#define NUM_VIRTIO_TRANSPORTS 32
/* Number of external interrupt lines to configure the GIC with */
#define NUM_IRQS 128
#define GIC_FDT_IRQ_TYPE_SPI 0
#define GIC_FDT_IRQ_TYPE_PPI 1
#define GIC_FDT_IRQ_FLAGS_EDGE_LO_HI 1
#define GIC_FDT_IRQ_FLAGS_EDGE_HI_LO 2
#define GIC_FDT_IRQ_FLAGS_LEVEL_HI 4
#define GIC_FDT_IRQ_FLAGS_LEVEL_LO 8
#define GIC_FDT_IRQ_PPI_CPU_START 8
#define GIC_FDT_IRQ_PPI_CPU_WIDTH 8
enum {
VIRT_FLASH,
VIRT_MEM,
VIRT_CPUPERIPHS,
VIRT_GIC_DIST,
VIRT_GIC_CPU,
VIRT_UART,
VIRT_MMIO,
};
typedef struct MemMapEntry {
hwaddr base;
hwaddr size;
} MemMapEntry;
typedef struct VirtBoardInfo {
struct arm_boot_info bootinfo;
const char *cpu_model;
const char *qdevname;
const char *gic_compatible;
const MemMapEntry *memmap;
const int *irqmap;
int smp_cpus;
void *fdt;
int fdt_size;
uint32_t clock_phandle;
} VirtBoardInfo;
/* Addresses and sizes of our components.
* 0..128MB is space for a flash device so we can run bootrom code such as UEFI.
* 128MB..256MB is used for miscellaneous device I/O.
* 256MB..1GB is reserved for possible future PCI support (ie where the
* PCI memory window will go if we add a PCI host controller).
* 1GB and up is RAM (which may happily spill over into the
* high memory region beyond 4GB).
* This represents a compromise between how much RAM can be given to
* a 32 bit VM and leaving space for expansion and in particular for PCI.
*/
static const MemMapEntry a15memmap[] = {
/* Space up to 0x8000000 is reserved for a boot ROM */
[VIRT_FLASH] = { 0, 0x8000000 },
[VIRT_CPUPERIPHS] = { 0x8000000, 0x8000 },
/* GIC distributor and CPU interfaces sit inside the CPU peripheral space */
[VIRT_GIC_DIST] = { 0x8001000, 0x1000 },
[VIRT_GIC_CPU] = { 0x8002000, 0x1000 },
[VIRT_UART] = { 0x9000000, 0x1000 },
[VIRT_MMIO] = { 0xa000000, 0x200 },
/* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
/* 0x10000000 .. 0x40000000 reserved for PCI */
[VIRT_MEM] = { 0x40000000, 30ULL * 1024 * 1024 * 1024 },
};
static const int a15irqmap[] = {
[VIRT_UART] = 1,
[VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
};
static VirtBoardInfo machines[] = {
{
.cpu_model = "cortex-a15",
.qdevname = "a15mpcore_priv",
.gic_compatible = "arm,cortex-a15-gic",
.memmap = a15memmap,
.irqmap = a15irqmap,
},
{
.cpu_model = "host",
/* We use the A15 private peripheral model to get a V2 GIC */
.qdevname = "a15mpcore_priv",
.gic_compatible = "arm,cortex-a15-gic",
.memmap = a15memmap,
.irqmap = a15irqmap,
},
};
static VirtBoardInfo *find_machine_info(const char *cpu)
{
int i;
for (i = 0; i < ARRAY_SIZE(machines); i++) {
if (strcmp(cpu, machines[i].cpu_model) == 0) {
return &machines[i];
}
}
return NULL;
}
static void create_fdt(VirtBoardInfo *vbi)
{
void *fdt = create_device_tree(&vbi->fdt_size);
if (!fdt) {
error_report("create_device_tree() failed");
exit(1);
}
vbi->fdt = fdt;
/* Header */
qemu_devtree_setprop_string(fdt, "/", "compatible", "linux,dummy-virt");
qemu_devtree_setprop_cell(fdt, "/", "#address-cells", 0x2);
qemu_devtree_setprop_cell(fdt, "/", "#size-cells", 0x2);
/*
* /chosen and /memory nodes must exist for load_dtb
* to fill in necessary properties later
*/
qemu_devtree_add_subnode(fdt, "/chosen");
qemu_devtree_add_subnode(fdt, "/memory");
qemu_devtree_setprop_string(fdt, "/memory", "device_type", "memory");
/* Clock node, for the benefit of the UART. The kernel device tree
* binding documentation claims the PL011 node clock properties are
* optional but in practice if you omit them the kernel refuses to
* probe for the device.
*/
vbi->clock_phandle = qemu_devtree_alloc_phandle(fdt);
qemu_devtree_add_subnode(fdt, "/apb-pclk");
qemu_devtree_setprop_string(fdt, "/apb-pclk", "compatible", "fixed-clock");
qemu_devtree_setprop_cell(fdt, "/apb-pclk", "#clock-cells", 0x0);
qemu_devtree_setprop_cell(fdt, "/apb-pclk", "clock-frequency", 24000000);
qemu_devtree_setprop_string(fdt, "/apb-pclk", "clock-output-names",
"clk24mhz");
qemu_devtree_setprop_cell(fdt, "/apb-pclk", "phandle", vbi->clock_phandle);
/* No PSCI for TCG yet */
if (kvm_enabled()) {
qemu_devtree_add_subnode(fdt, "/psci");
qemu_devtree_setprop_string(fdt, "/psci", "compatible", "arm,psci");
qemu_devtree_setprop_string(fdt, "/psci", "method", "hvc");
qemu_devtree_setprop_cell(fdt, "/psci", "cpu_suspend",
PSCI_FN_CPU_SUSPEND);
qemu_devtree_setprop_cell(fdt, "/psci", "cpu_off", PSCI_FN_CPU_OFF);
qemu_devtree_setprop_cell(fdt, "/psci", "cpu_on", PSCI_FN_CPU_ON);
qemu_devtree_setprop_cell(fdt, "/psci", "migrate", PSCI_FN_MIGRATE);
}
}
static void fdt_add_timer_nodes(const VirtBoardInfo *vbi)
{
/* Note that on A15 h/w these interrupts are level-triggered,
* but for the GIC implementation provided by both QEMU and KVM
* they are edge-triggered.
*/
uint32_t irqflags = GIC_FDT_IRQ_FLAGS_EDGE_LO_HI;
irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START,
GIC_FDT_IRQ_PPI_CPU_WIDTH, (1 << vbi->smp_cpus) - 1);
qemu_devtree_add_subnode(vbi->fdt, "/timer");
qemu_devtree_setprop_string(vbi->fdt, "/timer",
"compatible", "arm,armv7-timer");
qemu_devtree_setprop_cells(vbi->fdt, "/timer", "interrupts",
GIC_FDT_IRQ_TYPE_PPI, 13, irqflags,
GIC_FDT_IRQ_TYPE_PPI, 14, irqflags,
GIC_FDT_IRQ_TYPE_PPI, 11, irqflags,
GIC_FDT_IRQ_TYPE_PPI, 10, irqflags);
}
static void fdt_add_cpu_nodes(const VirtBoardInfo *vbi)
{
int cpu;
qemu_devtree_add_subnode(vbi->fdt, "/cpus");
qemu_devtree_setprop_cell(vbi->fdt, "/cpus", "#address-cells", 0x1);
qemu_devtree_setprop_cell(vbi->fdt, "/cpus", "#size-cells", 0x0);
for (cpu = vbi->smp_cpus - 1; cpu >= 0; cpu--) {
char *nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu));
qemu_devtree_add_subnode(vbi->fdt, nodename);
qemu_devtree_setprop_string(vbi->fdt, nodename, "device_type", "cpu");
qemu_devtree_setprop_string(vbi->fdt, nodename, "compatible",
armcpu->dtb_compatible);
if (vbi->smp_cpus > 1) {
qemu_devtree_setprop_string(vbi->fdt, nodename,
"enable-method", "psci");
}
qemu_devtree_setprop_cell(vbi->fdt, nodename, "reg", cpu);
g_free(nodename);
}
}
static void fdt_add_gic_node(const VirtBoardInfo *vbi)
{
uint32_t gic_phandle;
gic_phandle = qemu_devtree_alloc_phandle(vbi->fdt);
qemu_devtree_setprop_cell(vbi->fdt, "/", "interrupt-parent", gic_phandle);
qemu_devtree_add_subnode(vbi->fdt, "/intc");
qemu_devtree_setprop_string(vbi->fdt, "/intc", "compatible",
vbi->gic_compatible);
qemu_devtree_setprop_cell(vbi->fdt, "/intc", "#interrupt-cells", 3);
qemu_devtree_setprop(vbi->fdt, "/intc", "interrupt-controller", NULL, 0);
qemu_devtree_setprop_sized_cells(vbi->fdt, "/intc", "reg",
2, vbi->memmap[VIRT_GIC_DIST].base,
2, vbi->memmap[VIRT_GIC_DIST].size,
2, vbi->memmap[VIRT_GIC_CPU].base,
2, vbi->memmap[VIRT_GIC_CPU].size);
qemu_devtree_setprop_cell(vbi->fdt, "/intc", "phandle", gic_phandle);
}
static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic)
{
char *nodename;
hwaddr base = vbi->memmap[VIRT_UART].base;
hwaddr size = vbi->memmap[VIRT_UART].size;
int irq = vbi->irqmap[VIRT_UART];
const char compat[] = "arm,pl011\0arm,primecell";
const char clocknames[] = "uartclk\0apb_pclk";
sysbus_create_simple("pl011", base, pic[irq]);
nodename = g_strdup_printf("/pl011@%" PRIx64, base);
qemu_devtree_add_subnode(vbi->fdt, nodename);
/* Note that we can't use setprop_string because of the embedded NUL */
qemu_devtree_setprop(vbi->fdt, nodename, "compatible",
compat, sizeof(compat));
qemu_devtree_setprop_sized_cells(vbi->fdt, nodename, "reg",
2, base, 2, size);
qemu_devtree_setprop_cells(vbi->fdt, nodename, "interrupts",
GIC_FDT_IRQ_TYPE_SPI, irq,
GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
qemu_devtree_setprop_cells(vbi->fdt, nodename, "clocks",
vbi->clock_phandle, vbi->clock_phandle);
qemu_devtree_setprop(vbi->fdt, nodename, "clock-names",
clocknames, sizeof(clocknames));
g_free(nodename);
}
static void create_virtio_devices(const VirtBoardInfo *vbi, qemu_irq *pic)
{
int i;
hwaddr size = vbi->memmap[VIRT_MMIO].size;
/* Note that we have to create the transports in forwards order
* so that command line devices are inserted lowest address first,
* and then add dtb nodes in reverse order so that they appear in
* the finished device tree lowest address first.
*/
for (i = 0; i < NUM_VIRTIO_TRANSPORTS; i++) {
int irq = vbi->irqmap[VIRT_MMIO] + i;
hwaddr base = vbi->memmap[VIRT_MMIO].base + i * size;
sysbus_create_simple("virtio-mmio", base, pic[irq]);
}
for (i = NUM_VIRTIO_TRANSPORTS - 1; i >= 0; i--) {
char *nodename;
int irq = vbi->irqmap[VIRT_MMIO] + i;
hwaddr base = vbi->memmap[VIRT_MMIO].base + i * size;
nodename = g_strdup_printf("/virtio_mmio@%" PRIx64, base);
qemu_devtree_add_subnode(vbi->fdt, nodename);
qemu_devtree_setprop_string(vbi->fdt, nodename,
"compatible", "virtio,mmio");
qemu_devtree_setprop_sized_cells(vbi->fdt, nodename, "reg",
2, base, 2, size);
qemu_devtree_setprop_cells(vbi->fdt, nodename, "interrupts",
GIC_FDT_IRQ_TYPE_SPI, irq,
GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
g_free(nodename);
}
}
static void *machvirt_dtb(const struct arm_boot_info *binfo, int *fdt_size)
{
const VirtBoardInfo *board = (const VirtBoardInfo *)binfo;
*fdt_size = board->fdt_size;
return board->fdt;
}
static void machvirt_init(QEMUMachineInitArgs *args)
{
qemu_irq pic[NUM_IRQS];
MemoryRegion *sysmem = get_system_memory();
int n;
MemoryRegion *ram = g_new(MemoryRegion, 1);
DeviceState *dev;
SysBusDevice *busdev;
const char *cpu_model = args->cpu_model;
VirtBoardInfo *vbi;
if (!cpu_model) {
cpu_model = "cortex-a15";
}
vbi = find_machine_info(cpu_model);
if (!vbi) {
error_report("mach-virt: CPU %s not supported", cpu_model);
exit(1);
}
vbi->smp_cpus = smp_cpus;
/*
* Only supported method of starting secondary CPUs is PSCI and
* PSCI is not yet supported with TCG, so limit smp_cpus to 1
* if we're not using KVM.
*/
if (!kvm_enabled() && smp_cpus > 1) {
error_report("mach-virt: must enable KVM to use multiple CPUs");
exit(1);
}
if (args->ram_size > vbi->memmap[VIRT_MEM].size) {
error_report("mach-virt: cannot model more than 30GB RAM");
exit(1);
}
create_fdt(vbi);
fdt_add_timer_nodes(vbi);
for (n = 0; n < smp_cpus; n++) {
ObjectClass *oc = cpu_class_by_name(TYPE_ARM_CPU, cpu_model);
Object *cpuobj;
if (!oc) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
cpuobj = object_new(object_class_get_name(oc));
/* Secondary CPUs start in PSCI powered-down state */
if (n > 0) {
object_property_set_bool(cpuobj, true, "start-powered-off", NULL);
}
object_property_set_bool(cpuobj, true, "realized", NULL);
}
fdt_add_cpu_nodes(vbi);
memory_region_init_ram(ram, NULL, "mach-virt.ram", args->ram_size);
vmstate_register_ram_global(ram);
memory_region_add_subregion(sysmem, vbi->memmap[VIRT_MEM].base, ram);
dev = qdev_create(NULL, vbi->qdevname);
qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
/* Note that the num-irq property counts both internal and external
* interrupts; there are always 32 of the former (mandated by GIC spec).
*/
qdev_prop_set_uint32(dev, "num-irq", NUM_IRQS + 32);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, vbi->memmap[VIRT_CPUPERIPHS].base);
fdt_add_gic_node(vbi);
for (n = 0; n < smp_cpus; n++) {
DeviceState *cpudev = DEVICE(qemu_get_cpu(n));
sysbus_connect_irq(busdev, n, qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
}
for (n = 0; n < NUM_IRQS; n++) {
pic[n] = qdev_get_gpio_in(dev, n);
}
create_uart(vbi, pic);
/* Create mmio transports, so the user can create virtio backends
* (which will be automatically plugged in to the transports). If
* no backend is created the transport will just sit harmlessly idle.
*/
create_virtio_devices(vbi, pic);
vbi->bootinfo.ram_size = args->ram_size;
vbi->bootinfo.kernel_filename = args->kernel_filename;
vbi->bootinfo.kernel_cmdline = args->kernel_cmdline;
vbi->bootinfo.initrd_filename = args->initrd_filename;
vbi->bootinfo.nb_cpus = smp_cpus;
vbi->bootinfo.board_id = -1;
vbi->bootinfo.loader_start = vbi->memmap[VIRT_MEM].base;
vbi->bootinfo.get_dtb = machvirt_dtb;
arm_load_kernel(ARM_CPU(first_cpu), &vbi->bootinfo);
}
static QEMUMachine machvirt_a15_machine = {
.name = "virt",
.desc = "ARM Virtual Machine",
.init = machvirt_init,
.max_cpus = 4,
};
static void machvirt_machine_init(void)
{
qemu_register_machine(&machvirt_a15_machine);
}
machine_init(machvirt_machine_init);

44
hw/cpu/a9mpcore.c
View File

@ -24,11 +24,14 @@ static void a9mp_priv_initfn(Object *obj)
memory_region_init(&s->container, obj, "a9mp-priv-container", 0x2000);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->container);
object_initialize(&s->scu, sizeof(s->scu), TYPE_A9_SCU);
qdev_set_parent_bus(DEVICE(&s->scu), sysbus_get_default());
object_initialize(&s->gic, sizeof(s->gic), TYPE_ARM_GIC);
qdev_set_parent_bus(DEVICE(&s->gic), sysbus_get_default());
object_initialize(&s->scu, sizeof(s->scu), TYPE_A9_SCU);
qdev_set_parent_bus(DEVICE(&s->scu), sysbus_get_default());
object_initialize(&s->gtimer, sizeof(s->gtimer), TYPE_A9_GTIMER);
qdev_set_parent_bus(DEVICE(&s->gtimer), sysbus_get_default());
object_initialize(&s->mptimer, sizeof(s->mptimer), TYPE_ARM_MPTIMER);
qdev_set_parent_bus(DEVICE(&s->mptimer), sysbus_get_default());
@ -41,11 +44,21 @@ static void a9mp_priv_realize(DeviceState *dev, Error **errp)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
A9MPPrivState *s = A9MPCORE_PRIV(dev);
DeviceState *gicdev, *scudev, *mptimerdev, *wdtdev;
SysBusDevice *timerbusdev, *wdtbusdev, *gicbusdev, *scubusdev;
DeviceState *scudev, *gicdev, *gtimerdev, *mptimerdev, *wdtdev;
SysBusDevice *scubusdev, *gicbusdev, *gtimerbusdev, *mptimerbusdev,
*wdtbusdev;
Error *err = NULL;
int i;
scudev = DEVICE(&s->scu);
qdev_prop_set_uint32(scudev, "num-cpu", s->num_cpu);
object_property_set_bool(OBJECT(&s->scu), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
scubusdev = SYS_BUS_DEVICE(&s->scu);
gicdev = DEVICE(&s->gic);
qdev_prop_set_uint32(gicdev, "num-cpu", s->num_cpu);
qdev_prop_set_uint32(gicdev, "num-irq", s->num_irq);
@ -62,14 +75,14 @@ static void a9mp_priv_realize(DeviceState *dev, Error **errp)
/* Pass through inbound GPIO lines to the GIC */
qdev_init_gpio_in(dev, a9mp_priv_set_irq, s->num_irq - 32);
scudev = DEVICE(&s->scu);
qdev_prop_set_uint32(scudev, "num-cpu", s->num_cpu);
object_property_set_bool(OBJECT(&s->scu), true, "realized", &err);
gtimerdev = DEVICE(&s->gtimer);
qdev_prop_set_uint32(gtimerdev, "num-cpu", s->num_cpu);
object_property_set_bool(OBJECT(&s->gtimer), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
scubusdev = SYS_BUS_DEVICE(&s->scu);
gtimerbusdev = SYS_BUS_DEVICE(&s->gtimer);
mptimerdev = DEVICE(&s->mptimer);
qdev_prop_set_uint32(mptimerdev, "num-cpu", s->num_cpu);
@ -78,7 +91,7 @@ static void a9mp_priv_realize(DeviceState *dev, Error **errp)
error_propagate(errp, err);
return;
}
timerbusdev = SYS_BUS_DEVICE(&s->mptimer);
mptimerbusdev = SYS_BUS_DEVICE(&s->mptimer);
wdtdev = DEVICE(&s->wdt);
qdev_prop_set_uint32(wdtdev, "num-cpu", s->num_cpu);
@ -97,30 +110,33 @@ static void a9mp_priv_realize(DeviceState *dev, Error **errp)
* 0x0600-0x06ff -- private timers and watchdogs
* 0x0700-0x0fff -- nothing
* 0x1000-0x1fff -- GIC Distributor
*
* We should implement the global timer but don't currently do so.
*/
memory_region_add_subregion(&s->container, 0,
sysbus_mmio_get_region(scubusdev, 0));
/* GIC CPU interface */
memory_region_add_subregion(&s->container, 0x100,
sysbus_mmio_get_region(gicbusdev, 1));
memory_region_add_subregion(&s->container, 0x200,
sysbus_mmio_get_region(gtimerbusdev, 0));
/* Note that the A9 exposes only the "timer/watchdog for this core"
* memory region, not the "timer/watchdog for core X" ones 11MPcore has.
*/
memory_region_add_subregion(&s->container, 0x600,
sysbus_mmio_get_region(timerbusdev, 0));
sysbus_mmio_get_region(mptimerbusdev, 0));
memory_region_add_subregion(&s->container, 0x620,
sysbus_mmio_get_region(wdtbusdev, 0));
memory_region_add_subregion(&s->container, 0x1000,
sysbus_mmio_get_region(gicbusdev, 0));
/* Wire up the interrupt from each watchdog and timer.
* For each core the timer is PPI 29 and the watchdog PPI 30.
* For each core the global timer is PPI 27, the private
* timer is PPI 29 and the watchdog PPI 30.
*/
for (i = 0; i < s->num_cpu; i++) {
int ppibase = (s->num_irq - 32) + i * 32;
sysbus_connect_irq(timerbusdev, i,
sysbus_connect_irq(gtimerbusdev, i,
qdev_get_gpio_in(gicdev, ppibase + 27));
sysbus_connect_irq(mptimerbusdev, i,
qdev_get_gpio_in(gicdev, ppibase + 29));
sysbus_connect_irq(wdtbusdev, i,
qdev_get_gpio_in(gicdev, ppibase + 30));

282
hw/net/cadence_gem.c
View File

@ -222,8 +222,13 @@
#define PHY_REG_INT_ST_ENERGY 0x0010
/***********************************************************************/
#define GEM_RX_REJECT 1
#define GEM_RX_ACCEPT 0
#define GEM_RX_REJECT (-1)
#define GEM_RX_PROMISCUOUS_ACCEPT (-2)
#define GEM_RX_BROADCAST_ACCEPT (-3)
#define GEM_RX_MULTICAST_HASH_ACCEPT (-4)
#define GEM_RX_UNICAST_HASH_ACCEPT (-5)
#define GEM_RX_SAR_ACCEPT 0
/***********************************************************************/
@ -236,6 +241,13 @@
#define DESC_0_RX_WRAP 0x00000002
#define DESC_0_RX_OWNERSHIP 0x00000001
#define R_DESC_1_RX_SAR_SHIFT 25
#define R_DESC_1_RX_SAR_LENGTH 2
#define R_DESC_1_RX_SAR_MATCH (1 << 27)
#define R_DESC_1_RX_UNICAST_HASH (1 << 29)
#define R_DESC_1_RX_MULTICAST_HASH (1 << 30)
#define R_DESC_1_RX_BROADCAST (1 << 31)
#define DESC_1_RX_SOF 0x00004000
#define DESC_1_RX_EOF 0x00008000
@ -315,6 +327,28 @@ static inline void rx_desc_set_length(unsigned *desc, unsigned len)
desc[1] |= len;
}
static inline void rx_desc_set_broadcast(unsigned *desc)
{
desc[1] |= R_DESC_1_RX_BROADCAST;
}
static inline void rx_desc_set_unicast_hash(unsigned *desc)
{
desc[1] |= R_DESC_1_RX_UNICAST_HASH;
}
static inline void rx_desc_set_multicast_hash(unsigned *desc)
{
desc[1] |= R_DESC_1_RX_MULTICAST_HASH;
}
static inline void rx_desc_set_sar(unsigned *desc, int sar_idx)
{
desc[1] = deposit32(desc[1], R_DESC_1_RX_SAR_SHIFT, R_DESC_1_RX_SAR_LENGTH,
sar_idx);
desc[1] |= R_DESC_1_RX_SAR_MATCH;
}
#define TYPE_CADENCE_GEM "cadence_gem"
#define GEM(obj) OBJECT_CHECK(GemState, (obj), TYPE_CADENCE_GEM)
@ -346,6 +380,11 @@ typedef struct GemState {
uint32_t rx_desc_addr;
uint32_t tx_desc_addr;
uint8_t can_rx_state; /* Debug only */
unsigned rx_desc[2];
bool sar_active[4];
} GemState;
/* The broadcast MAC address: 0xFFFFFFFFFFFF */
@ -415,13 +454,28 @@ static int gem_can_receive(NetClientState *nc)
s = qemu_get_nic_opaque(nc);
DB_PRINT("\n");
/* Do nothing if receive is not enabled. */
if (!(s->regs[GEM_NWCTRL] & GEM_NWCTRL_RXENA)) {
if (s->can_rx_state != 1) {
s->can_rx_state = 1;
DB_PRINT("can't receive - no enable\n");
}
return 0;
}
if (rx_desc_get_ownership(s->rx_desc) == 1) {
if (s->can_rx_state != 2) {
s->can_rx_state = 2;
DB_PRINT("can't receive - busy buffer descriptor 0x%x\n",
s->rx_desc_addr);
}
return 0;
}
if (s->can_rx_state != 0) {
s->can_rx_state = 0;
DB_PRINT("can receive 0x%x\n", s->rx_desc_addr);
}
return 1;
}
@ -527,7 +581,10 @@ static unsigned calc_mac_hash(const uint8_t *mac)
* Accept or reject this destination address?
* Returns:
* GEM_RX_REJECT: reject
* GEM_RX_ACCEPT: accept
* >= 0: Specific address accept (which matched SAR is returned)
* others for various other modes of accept:
* GEM_RM_PROMISCUOUS_ACCEPT, GEM_RX_BROADCAST_ACCEPT,
* GEM_RX_MULTICAST_HASH_ACCEPT or GEM_RX_UNICAST_HASH_ACCEPT
*/
static int gem_mac_address_filter(GemState *s, const uint8_t *packet)
{
@ -536,7 +593,7 @@ static int gem_mac_address_filter(GemState *s, const uint8_t *packet)
/* Promiscuous mode? */
if (s->regs[GEM_NWCFG] & GEM_NWCFG_PROMISC) {
return GEM_RX_ACCEPT;
return GEM_RX_PROMISCUOUS_ACCEPT;
}
if (!memcmp(packet, broadcast_addr, 6)) {
@ -544,7 +601,7 @@ static int gem_mac_address_filter(GemState *s, const uint8_t *packet)
if (s->regs[GEM_NWCFG] & GEM_NWCFG_BCAST_REJ) {
return GEM_RX_REJECT;
}
return GEM_RX_ACCEPT;
return GEM_RX_BROADCAST_ACCEPT;
}
/* Accept packets -w- hash match? */
@ -555,53 +612,67 @@ static int gem_mac_address_filter(GemState *s, const uint8_t *packet)
hash_index = calc_mac_hash(packet);
if (hash_index < 32) {
if (s->regs[GEM_HASHLO] & (1<<hash_index)) {
return GEM_RX_ACCEPT;
return packet[0] == 0x01 ? GEM_RX_MULTICAST_HASH_ACCEPT :
GEM_RX_UNICAST_HASH_ACCEPT;
}
} else {
hash_index -= 32;
if (s->regs[GEM_HASHHI] & (1<<hash_index)) {
return GEM_RX_ACCEPT;
return packet[0] == 0x01 ? GEM_RX_MULTICAST_HASH_ACCEPT :
GEM_RX_UNICAST_HASH_ACCEPT;
}
}
}
/* Check all 4 specific addresses */
gem_spaddr = (uint8_t *)&(s->regs[GEM_SPADDR1LO]);
for (i = 0; i < 4; i++) {
if (!memcmp(packet, gem_spaddr, 6)) {
return GEM_RX_ACCEPT;
for (i = 3; i >= 0; i--) {
if (s->sar_active[i] && !memcmp(packet, gem_spaddr + 8 * i, 6)) {
return GEM_RX_SAR_ACCEPT + i;
}
gem_spaddr += 8;
}
/* No address match; reject the packet */
return GEM_RX_REJECT;
}
static void gem_get_rx_desc(GemState *s)
{
DB_PRINT("read descriptor 0x%x\n", (unsigned)s->rx_desc_addr);
/* read current descriptor */
cpu_physical_memory_read(s->rx_desc_addr,
(uint8_t *)s->rx_desc, sizeof(s->rx_desc));
/* Descriptor owned by software ? */
if (rx_desc_get_ownership(s->rx_desc) == 1) {
DB_PRINT("descriptor 0x%x owned by sw.\n",
(unsigned)s->rx_desc_addr);
s->regs[GEM_RXSTATUS] |= GEM_RXSTATUS_NOBUF;
s->regs[GEM_ISR] |= GEM_INT_RXUSED & ~(s->regs[GEM_IMR]);
/* Handle interrupt consequences */
gem_update_int_status(s);
}
}
/*
* gem_receive:
* Fit a packet handed to us by QEMU into the receive descriptor ring.
*/
static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
{
unsigned desc[2];
hwaddr packet_desc_addr, last_desc_addr;
GemState *s;
unsigned rxbufsize, bytes_to_copy;
unsigned rxbuf_offset;
uint8_t rxbuf[2048];
uint8_t *rxbuf_ptr;
bool first_desc = true;
int maf;
s = qemu_get_nic_opaque(nc);
/* Do nothing if receive is not enabled. */
if (!gem_can_receive(nc)) {
return -1;
}
/* Is this destination MAC address "for us" ? */
if (gem_mac_address_filter(s, buf) == GEM_RX_REJECT) {
maf = gem_mac_address_filter(s, buf);
if (maf == GEM_RX_REJECT) {
return -1;
}
@ -633,6 +704,14 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
GEM_DMACFG_RBUFSZ_S) * GEM_DMACFG_RBUFSZ_MUL;
bytes_to_copy = size;
/* Pad to minimum length. Assume FCS field is stripped, logic
* below will increment it to the real minimum of 64 when
* not FCS stripping
*/
if (size < 60) {
size = 60;
}
/* Strip of FCS field ? (usually yes) */
if (s->regs[GEM_NWCFG] & GEM_NWCFG_STRIP_FCS) {
rxbuf_ptr = (void *)buf;
@ -659,95 +738,71 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
size += 4;
}
/* Pad to minimum length */
if (size < 64) {
size = 64;
}
DB_PRINT("config bufsize: %d packet size: %ld\n", rxbufsize, size);
packet_desc_addr = s->rx_desc_addr;
while (1) {
DB_PRINT("read descriptor 0x%x\n", (unsigned)packet_desc_addr);
/* read current descriptor */
cpu_physical_memory_read(packet_desc_addr,
(uint8_t *)&desc[0], sizeof(desc));
/* Descriptor owned by software ? */
if (rx_desc_get_ownership(desc) == 1) {
DB_PRINT("descriptor 0x%x owned by sw.\n",
(unsigned)packet_desc_addr);
s->regs[GEM_RXSTATUS] |= GEM_RXSTATUS_NOBUF;
s->regs[GEM_ISR] |= GEM_INT_RXUSED & ~(s->regs[GEM_IMR]);
/* Handle interrupt consequences */
gem_update_int_status(s);
while (bytes_to_copy) {
/* Do nothing if receive is not enabled. */
if (!gem_can_receive(nc)) {
assert(!first_desc);
return -1;
}
DB_PRINT("copy %d bytes to 0x%x\n", MIN(bytes_to_copy, rxbufsize),
rx_desc_get_buffer(desc));
/*
* Let's have QEMU lend a helping hand.
*/
if (rx_desc_get_buffer(desc) == 0) {
DB_PRINT("Invalid RX buffer (NULL) for descriptor 0x%x\n",
(unsigned)packet_desc_addr);
break;
}
rx_desc_get_buffer(s->rx_desc));
/* Copy packet data to emulated DMA buffer */
cpu_physical_memory_write(rx_desc_get_buffer(desc) + rxbuf_offset,
cpu_physical_memory_write(rx_desc_get_buffer(s->rx_desc) + rxbuf_offset,
rxbuf_ptr, MIN(bytes_to_copy, rxbufsize));
bytes_to_copy -= MIN(bytes_to_copy, rxbufsize);
rxbuf_ptr += MIN(bytes_to_copy, rxbufsize);
if (bytes_to_copy == 0) {
break;
bytes_to_copy -= MIN(bytes_to_copy, rxbufsize);
/* Update the descriptor. */
if (first_desc) {
rx_desc_set_sof(s->rx_desc);
first_desc = false;
}
if (bytes_to_copy == 0) {
rx_desc_set_eof(s->rx_desc);
rx_desc_set_length(s->rx_desc, size);
}
rx_desc_set_ownership(s->rx_desc);
switch (maf) {
case GEM_RX_PROMISCUOUS_ACCEPT:
break;
case GEM_RX_BROADCAST_ACCEPT:
rx_desc_set_broadcast(s->rx_desc);
break;
case GEM_RX_UNICAST_HASH_ACCEPT:
rx_desc_set_unicast_hash(s->rx_desc);
break;
case GEM_RX_MULTICAST_HASH_ACCEPT:
rx_desc_set_multicast_hash(s->rx_desc);
break;
case GEM_RX_REJECT:
abort();
default: /* SAR */
rx_desc_set_sar(s->rx_desc, maf);
}
/* Descriptor write-back. */
cpu_physical_memory_write(s->rx_desc_addr,
(uint8_t *)s->rx_desc, sizeof(s->rx_desc));
/* Next descriptor */
if (rx_desc_get_wrap(desc)) {
packet_desc_addr = s->regs[GEM_RXQBASE];
if (rx_desc_get_wrap(s->rx_desc)) {
DB_PRINT("wrapping RX descriptor list\n");
s->rx_desc_addr = s->regs[GEM_RXQBASE];
} else {
packet_desc_addr += 8;
DB_PRINT("incrementing RX descriptor list\n");
s->rx_desc_addr += 8;
}
gem_get_rx_desc(s);
}
DB_PRINT("set length: %ld, EOF on descriptor 0x%x\n", size,
(unsigned)packet_desc_addr);
/* Update last descriptor with EOF and total length */
rx_desc_set_eof(desc);
rx_desc_set_length(desc, size);
cpu_physical_memory_write(packet_desc_addr,
(uint8_t *)&desc[0], sizeof(desc));
/* Advance RX packet descriptor Q */
last_desc_addr = packet_desc_addr;
packet_desc_addr = s->rx_desc_addr;
s->rx_desc_addr = last_desc_addr;
if (rx_desc_get_wrap(desc)) {
s->rx_desc_addr = s->regs[GEM_RXQBASE];
DB_PRINT("wrapping RX descriptor list\n");
} else {
DB_PRINT("incrementing RX descriptor list\n");
s->rx_desc_addr += 8;
}
DB_PRINT("set SOF, OWN on descriptor 0x%08x\n", (unsigned)packet_desc_addr);
/* Count it */
gem_receive_updatestats(s, buf, size);
/* Update first descriptor (which could also be the last) */
/* read descriptor */
cpu_physical_memory_read(packet_desc_addr,
(uint8_t *)&desc[0], sizeof(desc));
rx_desc_set_sof(desc);
rx_desc_set_ownership(desc);
cpu_physical_memory_write(packet_desc_addr,
(uint8_t *)&desc[0], sizeof(desc));
s->regs[GEM_RXSTATUS] |= GEM_RXSTATUS_FRMRCVD;
s->regs[GEM_ISR] |= GEM_INT_RXCMPL & ~(s->regs[GEM_IMR]);
@ -893,7 +948,7 @@ static void gem_transmit(GemState *s)
gem_transmit_updatestats(s, tx_packet, total_bytes);
/* Send the packet somewhere */
if (s->phy_loop) {
if (s->phy_loop || (s->regs[GEM_NWCTRL] & GEM_NWCTRL_LOCALLOOP)) {
gem_receive(qemu_get_queue(s->nic), tx_packet, total_bytes);
} else {
qemu_send_packet(qemu_get_queue(s->nic), tx_packet,
@ -949,6 +1004,7 @@ static void gem_phy_reset(GemState *s)
static void gem_reset(DeviceState *d)
{
int i;
GemState *s = GEM(d);
DB_PRINT("\n");
@ -968,6 +1024,10 @@ static void gem_reset(DeviceState *d)
s->regs[GEM_DESCONF5] = 0x002f2145;
s->regs[GEM_DESCONF6] = 0x00000200;
for (i = 0; i < 4; i++) {
s->sar_active[i] = false;
}
gem_phy_reset(s);
gem_update_int_status(s);
@ -1069,19 +1129,21 @@ static void gem_write(void *opaque, hwaddr offset, uint64_t val,
/* Squash bits which are read only in write value */
val &= ~(s->regs_ro[offset]);
/* Preserve (only) bits which are read only in register */
readonly = s->regs[offset];
readonly &= s->regs_ro[offset];
/* Squash bits which are write 1 to clear */
val &= ~(s->regs_w1c[offset] & val);
/* Preserve (only) bits which are read only and wtc in register */
readonly = s->regs[offset] & (s->regs_ro[offset] | s->regs_w1c[offset]);
/* Copy register write to backing store */
s->regs[offset] = val | readonly;
s->regs[offset] = (val & ~s->regs_w1c[offset]) | readonly;
/* do w1c */
s->regs[offset] &= ~(s->regs_w1c[offset] & val);
/* Handle register write side effects */
switch (offset) {
case GEM_NWCTRL:
if (val & GEM_NWCTRL_RXENA) {
gem_get_rx_desc(s);
}
if (val & GEM_NWCTRL_TXSTART) {
gem_transmit(s);
}
@ -1089,7 +1151,7 @@ static void gem_write(void *opaque, hwaddr offset, uint64_t val,
/* Reset to start of Q when transmit disabled. */
s->tx_desc_addr = s->regs[GEM_TXQBASE];
}
if (val & GEM_NWCTRL_RXENA) {
if (gem_can_receive(qemu_get_queue(s->nic))) {
qemu_flush_queued_packets(qemu_get_queue(s->nic));
}
break;
@ -1114,6 +1176,18 @@ static void gem_write(void *opaque, hwaddr offset, uint64_t val,
s->regs[GEM_IMR] |= val;
gem_update_int_status(s);
break;
case GEM_SPADDR1LO:
case GEM_SPADDR2LO:
case GEM_SPADDR3LO:
case GEM_SPADDR4LO:
s->sar_active[(offset - GEM_SPADDR1LO) / 2] = false;
break;
case GEM_SPADDR1HI:
case GEM_SPADDR2HI:
case GEM_SPADDR3HI:
case GEM_SPADDR4HI:
s->sar_active[(offset - GEM_SPADDR1HI) / 2] = true;
break;
case GEM_PHYMNTNC:
if (val & GEM_PHYMNTNC_OP_W) {
uint32_t phy_addr, reg_num;
@ -1181,15 +1255,17 @@ static int gem_init(SysBusDevice *sbd)
static const VMStateDescription vmstate_cadence_gem = {
.name = "cadence_gem",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.version_id = 2,
.minimum_version_id = 2,
.minimum_version_id_old = 2,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, GemState, GEM_MAXREG),
VMSTATE_UINT16_ARRAY(phy_regs, GemState, 32),
VMSTATE_UINT8(phy_loop, GemState),
VMSTATE_UINT32(rx_desc_addr, GemState),
VMSTATE_UINT32(tx_desc_addr, GemState),
VMSTATE_BOOL_ARRAY(sar_active, GemState, 4),
VMSTATE_END_OF_LIST(),
}
};

1
hw/timer/Makefile.objs
View File

@ -1,5 +1,6 @@
common-obj-$(CONFIG_ARM_TIMER) += arm_timer.o
common-obj-$(CONFIG_ARM_MPTIMER) += arm_mptimer.o
common-obj-$(CONFIG_A9_GTIMER) += a9gtimer.o
common-obj-$(CONFIG_CADENCE) += cadence_ttc.o
common-obj-$(CONFIG_DS1338) += ds1338.o
common-obj-$(CONFIG_HPET) += hpet.o

369
hw/timer/a9gtimer.c Normal file
View File

@ -0,0 +1,369 @@
/*
* Global peripheral timer block for ARM A9MP
*
* (C) 2013 Xilinx Inc.
*
* Written by François LEGAL
* Written by Peter Crosthwaite <peter.crosthwaite@xilinx.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "hw/timer/a9gtimer.h"
#include "qemu/timer.h"
#include "qemu/bitops.h"
#include "qemu/log.h"
#ifndef A9_GTIMER_ERR_DEBUG
#define A9_GTIMER_ERR_DEBUG 0
#endif
#define DB_PRINT_L(level, ...) do { \
if (A9_GTIMER_ERR_DEBUG > (level)) { \
fprintf(stderr, ": %s: ", __func__); \
fprintf(stderr, ## __VA_ARGS__); \
} \
} while (0);
#define DB_PRINT(...) DB_PRINT_L(0, ## __VA_ARGS__)
static inline int a9_gtimer_get_current_cpu(A9GTimerState *s)
{
if (current_cpu->cpu_index >= s->num_cpu) {
hw_error("a9gtimer: num-cpu %d but this cpu is %d!\n",
s->num_cpu, current_cpu->cpu_index);
}
return current_cpu->cpu_index;
}
static inline uint64_t a9_gtimer_get_conv(A9GTimerState *s)
{
uint64_t prescale = extract32(s->control, R_CONTROL_PRESCALER_SHIFT,
R_CONTROL_PRESCALER_LEN);
return (prescale + 1) * 10;
}
static A9GTimerUpdate a9_gtimer_get_update(A9GTimerState *s)
{
A9GTimerUpdate ret;
ret.now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
ret.new = s->ref_counter +
(ret.now - s->cpu_ref_time) / a9_gtimer_get_conv(s);
return ret;
}
static void a9_gtimer_update(A9GTimerState *s, bool sync)
{
A9GTimerUpdate update = a9_gtimer_get_update(s);
int i;
int64_t next_cdiff = 0;
for (i = 0; i < s->num_cpu; ++i) {
A9GTimerPerCPU *gtb = &s->per_cpu[i];
int64_t cdiff = 0;
if ((s->control & R_CONTROL_TIMER_ENABLE) &&
(gtb->control & R_CONTROL_COMP_ENABLE)) {
/* R2p0+, where the compare function is >= */
while (gtb->compare < update.new) {
DB_PRINT("Compare event happened for CPU %d\n", i);
gtb->status = 1;
if (gtb->control & R_CONTROL_AUTO_INCREMENT) {
DB_PRINT("Auto incrementing timer compare by %" PRId32 "\n",
gtb->inc);
gtb->compare += gtb->inc;
} else {
break;
}
}
cdiff = (int64_t)gtb->compare - (int64_t)update.new + 1;
if (cdiff > 0 && (cdiff < next_cdiff || !next_cdiff)) {
next_cdiff = cdiff;
}
}
qemu_set_irq(gtb->irq,
gtb->status && (gtb->control & R_CONTROL_IRQ_ENABLE));
}
timer_del(s->timer);
if (next_cdiff) {
DB_PRINT("scheduling qemu_timer to fire again in %"
PRIx64 " cycles\n", next_cdiff);
timer_mod(s->timer, update.now + next_cdiff * a9_gtimer_get_conv(s));
}
if (s->control & R_CONTROL_TIMER_ENABLE) {
s->counter = update.new;
}
if (sync) {
s->cpu_ref_time = update.now;
s->ref_counter = s->counter;
}
}
static void a9_gtimer_update_no_sync(void *opaque)
{
A9GTimerState *s = A9_GTIMER(opaque);
return a9_gtimer_update(s, false);
}
static uint64_t a9_gtimer_read(void *opaque, hwaddr addr, unsigned size)
{
A9GTimerPerCPU *gtb = (A9GTimerPerCPU *)opaque;
A9GTimerState *s = gtb->parent;
A9GTimerUpdate update;
uint64_t ret = 0;
int shift = 0;
switch (addr) {
case R_COUNTER_HI:
shift = 32;
/* fallthrough */
case R_COUNTER_LO:
update = a9_gtimer_get_update(s);
ret = extract64(update.new, shift, 32);
break;
case R_CONTROL:
ret = s->control | gtb->control;
break;
case R_INTERRUPT_STATUS:
ret = gtb->status;
break;
case R_COMPARATOR_HI:
shift = 32;
/* fallthrough */
case R_COMPARATOR_LO:
ret = extract64(gtb->compare, shift, 32);
break;
case R_AUTO_INCREMENT:
ret = gtb->inc;
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "bad a9gtimer register: %x\n",
(unsigned)addr);
return 0;
}
DB_PRINT("addr:%#x data:%#08" PRIx64 "\n", (unsigned)addr, ret);
return ret;
}
static void a9_gtimer_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
A9GTimerPerCPU *gtb = (A9GTimerPerCPU *)opaque;
A9GTimerState *s = gtb->parent;
int shift = 0;
DB_PRINT("addr:%#x data:%#08" PRIx64 "\n", (unsigned)addr, value);
switch (addr) {
case R_COUNTER_HI:
shift = 32;
/* fallthrough */
case R_COUNTER_LO:
/*
* Keep it simple - ARM docco explicitly says to disable timer before
* modding it, so dont bother trying to do all the difficult on the fly
* timer modifications - (if they even work in real hardware??).
*/
if (s->control & R_CONTROL_TIMER_ENABLE) {
qemu_log_mask(LOG_GUEST_ERROR, "Cannot mod running ARM gtimer\n");
return;
}
s->counter = deposit64(s->counter, shift, 32, value);
return;
case R_CONTROL:
a9_gtimer_update(s, (value ^ s->control) & R_CONTROL_NEEDS_SYNC);
gtb->control = value & R_CONTROL_BANKED;
s->control = value & ~R_CONTROL_BANKED;
break;
case R_INTERRUPT_STATUS:
a9_gtimer_update(s, false);
gtb->status &= ~value;
break;
case R_COMPARATOR_HI:
shift = 32;
/* fallthrough */
case R_COMPARATOR_LO:
a9_gtimer_update(s, false);
gtb->compare = deposit64(gtb->compare, shift, 32, value);
break;
case R_AUTO_INCREMENT:
gtb->inc = value;
return;
default:
return;
}
a9_gtimer_update(s, false);
}
/* Wrapper functions to implement the "read global timer for
* the current CPU" memory regions.
*/
static uint64_t a9_gtimer_this_read(void *opaque, hwaddr addr,
unsigned size)
{
A9GTimerState *s = A9_GTIMER(opaque);
int id = a9_gtimer_get_current_cpu(s);
/* no \n so concatenates with message from read fn */
DB_PRINT("CPU:%d:", id);
return a9_gtimer_read(&s->per_cpu[id], addr, size);
}
static void a9_gtimer_this_write(void *opaque, hwaddr addr,
uint64_t value, unsigned size)
{
A9GTimerState *s = A9_GTIMER(opaque);
int id = a9_gtimer_get_current_cpu(s);
/* no \n so concatenates with message from write fn */
DB_PRINT("CPU:%d:", id);
a9_gtimer_write(&s->per_cpu[id], addr, value, size);
}
static const MemoryRegionOps a9_gtimer_this_ops = {
.read = a9_gtimer_this_read,
.write = a9_gtimer_this_write,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
.endianness = DEVICE_NATIVE_ENDIAN,
};
static const MemoryRegionOps a9_gtimer_ops = {
.read = a9_gtimer_read,
.write = a9_gtimer_write,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void a9_gtimer_reset(DeviceState *dev)
{
A9GTimerState *s = A9_GTIMER(dev);
int i;
s->counter = 0;
s->control = 0;
for (i = 0; i < s->num_cpu; i++) {
A9GTimerPerCPU *gtb = &s->per_cpu[i];
gtb->control = 0;
gtb->status = 0;
gtb->compare = 0;
gtb->inc = 0;
}
a9_gtimer_update(s, false);
}
static void a9_gtimer_realize(DeviceState *dev, Error **errp)
{
A9GTimerState *s = A9_GTIMER(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
int i;
if (s->num_cpu < 1 || s->num_cpu > A9_GTIMER_MAX_CPUS) {
error_setg(errp, "%s: num-cpu must be between 1 and %d\n",
__func__, A9_GTIMER_MAX_CPUS);
return;
}
memory_region_init_io(&s->iomem, OBJECT(dev), &a9_gtimer_this_ops, s,
"a9gtimer shared", 0x20);
sysbus_init_mmio(sbd, &s->iomem);
s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, a9_gtimer_update_no_sync, s);
for (i = 0; i < s->num_cpu; i++) {
A9GTimerPerCPU *gtb = &s->per_cpu[i];
gtb->parent = s;
sysbus_init_irq(sbd, &gtb->irq);
memory_region_init_io(&gtb->iomem, OBJECT(dev), &a9_gtimer_ops, gtb,
"a9gtimer per cpu", 0x20);
sysbus_init_mmio(sbd, &gtb->iomem);
}
}
static const VMStateDescription vmstate_a9_gtimer_per_cpu = {
.name = "arm.cortex-a9-global-timer.percpu",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(control, A9GTimerPerCPU),
VMSTATE_UINT64(compare, A9GTimerPerCPU),
VMSTATE_UINT32(status, A9GTimerPerCPU),
VMSTATE_UINT32(inc, A9GTimerPerCPU),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_a9_gtimer = {
.name = "arm.cortex-a9-global-timer",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_TIMER(timer, A9GTimerState),
VMSTATE_UINT64(counter, A9GTimerState),
VMSTATE_UINT64(ref_counter, A9GTimerState),
VMSTATE_UINT64(cpu_ref_time, A9GTimerState),
VMSTATE_STRUCT_VARRAY_UINT32(per_cpu, A9GTimerState, num_cpu,
1, vmstate_a9_gtimer_per_cpu,
A9GTimerPerCPU),
VMSTATE_END_OF_LIST()
}
};
static Property a9_gtimer_properties[] = {
DEFINE_PROP_UINT32("num-cpu", A9GTimerState, num_cpu, 0),
DEFINE_PROP_END_OF_LIST()
};
static void a9_gtimer_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = a9_gtimer_realize;
dc->vmsd = &vmstate_a9_gtimer;
dc->reset = a9_gtimer_reset;
dc->props = a9_gtimer_properties;
}
static const TypeInfo a9_gtimer_info = {
.name = TYPE_A9_GTIMER,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(A9GTimerState),
.class_init = a9_gtimer_class_init,
};
static void a9_gtimer_register_types(void)
{
type_register_static(&a9_gtimer_info);
}
type_init(a9_gtimer_register_types)

4
include/fpu/softfloat.h
View File

@ -302,6 +302,8 @@ int float32_compare( float32, float32 STATUS_PARAM );
int float32_compare_quiet( float32, float32 STATUS_PARAM );
float32 float32_min(float32, float32 STATUS_PARAM);
float32 float32_max(float32, float32 STATUS_PARAM);
float32 float32_minnum(float32, float32 STATUS_PARAM);
float32 float32_maxnum(float32, float32 STATUS_PARAM);
int float32_is_quiet_nan( float32 );
int float32_is_signaling_nan( float32 );
float32 float32_maybe_silence_nan( float32 );
@ -408,6 +410,8 @@ int float64_compare( float64, float64 STATUS_PARAM );
int float64_compare_quiet( float64, float64 STATUS_PARAM );
float64 float64_min(float64, float64 STATUS_PARAM);
float64 float64_max(float64, float64 STATUS_PARAM);
float64 float64_minnum(float64, float64 STATUS_PARAM);
float64 float64_maxnum(float64, float64 STATUS_PARAM);
int float64_is_quiet_nan( float64 a );
int float64_is_signaling_nan( float64 );
float64 float64_maybe_silence_nan( float64 );

7
include/hw/arm/arm.h
View File

@ -50,6 +50,13 @@ struct arm_boot_info {
const struct arm_boot_info *info);
void (*secondary_cpu_reset_hook)(ARMCPU *cpu,
const struct arm_boot_info *info);
/* if a board is able to create a dtb without a dtb file then it
* sets get_dtb. This will only be used if no dtb file is provided
* by the user. On success, sets *size to the length of the created
* dtb, and returns a pointer to it. (The caller must free this memory
* with g_free() when it has finished with it.) On failure, returns NULL.
*/
void *(*get_dtb)(const struct arm_boot_info *info, int *size);
/* if a board needs to be able to modify a device tree provided by
* the user it should implement this hook.
*/

4
include/hw/cpu/a9mpcore.h
View File

@ -14,6 +14,7 @@
#include "hw/intc/arm_gic.h"
#include "hw/misc/a9scu.h"
#include "hw/timer/arm_mptimer.h"
#include "hw/timer/a9gtimer.h"
#define TYPE_A9MPCORE_PRIV "a9mpcore_priv"
#define A9MPCORE_PRIV(obj) \
@ -28,8 +29,9 @@ typedef struct A9MPPrivState {
MemoryRegion container;
uint32_t num_irq;
GICState gic;
A9SCUState scu;
GICState gic;
A9GTimerState gtimer;
ARMMPTimerState mptimer;
ARMMPTimerState wdt;
} A9MPPrivState;

97
include/hw/timer/a9gtimer.h Normal file
View File

@ -0,0 +1,97 @@
/*
* Global peripheral timer block for ARM A9MP
*
* (C) 2013 Xilinx Inc.
*
* Written by François LEGAL
* Written by Peter Crosthwaite <peter.crosthwaite@xilinx.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef HW_TIMER_A9_GTIMER_H_H
#define HW_TIMER_A9_GTIMER_H_H
#include "hw/sysbus.h"
#define A9_GTIMER_MAX_CPUS 4
#define TYPE_A9_GTIMER "arm.cortex-a9-global-timer"
#define A9_GTIMER(obj) OBJECT_CHECK(A9GTimerState, (obj), TYPE_A9_GTIMER)
#define R_COUNTER_LO 0x00
#define R_COUNTER_HI 0x04
#define R_CONTROL 0x08
#define R_CONTROL_TIMER_ENABLE (1 << 0)
#define R_CONTROL_COMP_ENABLE (1 << 1)
#define R_CONTROL_IRQ_ENABLE (1 << 2)
#define R_CONTROL_AUTO_INCREMENT (1 << 2)
#define R_CONTROL_PRESCALER_SHIFT 8
#define R_CONTROL_PRESCALER_LEN 8
#define R_CONTROL_PRESCALER_MASK (((1 << R_CONTROL_PRESCALER_LEN) - 1) << \
R_CONTROL_PRESCALER_SHIFT)
#define R_CONTROL_BANKED (R_CONTROL_COMP_ENABLE | \
R_CONTROL_IRQ_ENABLE | \
R_CONTROL_AUTO_INCREMENT)
#define R_CONTROL_NEEDS_SYNC (R_CONTROL_TIMER_ENABLE | \
R_CONTROL_PRESCALER_MASK)
#define R_INTERRUPT_STATUS 0x0C
#define R_COMPARATOR_LO 0x10
#define R_COMPARATOR_HI 0x14
#define R_AUTO_INCREMENT 0x18
typedef struct A9GTimerPerCPU A9GTimerPerCPU;
typedef struct A9GTimerState A9GTimerState;
struct A9GTimerPerCPU {
A9GTimerState *parent;
uint32_t control; /* only per cpu banked bits valid */
uint64_t compare;
uint32_t status;
uint32_t inc;
MemoryRegion iomem;
qemu_irq irq; /* PPI interrupts */
};
struct A9GTimerState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
/* static props */
uint32_t num_cpu;
QEMUTimer *timer;
uint64_t counter; /* current timer value */
uint64_t ref_counter;
uint64_t cpu_ref_time; /* the cpu time as of last update of ref_counter */
uint32_t control; /* only non per cpu banked bits valid */
A9GTimerPerCPU per_cpu[A9_GTIMER_MAX_CPUS];
};
typedef struct A9GTimerUpdate {
uint64_t now;
uint64_t new;
} A9GTimerUpdate;
#endif /* #ifdef HW_TIMER_A9_GTIMER_H_H */

11
target-arm/cpu-qom.h
View File

@ -91,6 +91,17 @@ typedef struct ARMCPU {
/* GPIO outputs for generic timer */
qemu_irq gt_timer_outputs[NUM_GTIMERS];
/* 'compatible' string for this CPU for Linux device trees */
const char *dtb_compatible;
/* Should CPU start in PSCI powered-off state? */
bool start_powered_off;
/* [QEMU_]KVM_ARM_TARGET_* constant for this CPU, or
* QEMU_KVM_ARM_TARGET_NONE if the kernel doesn't support this CPU type.
*/
uint32_t kvm_target;
/* The instance init functions for implementation-specific subclasses
* set these fields to specify the implementation-dependent values of
* various constant registers and reset values of non-constant

59
target-arm/cpu.c
View File

@ -20,6 +20,7 @@
#include "cpu.h"
#include "qemu-common.h"
#include "hw/qdev-properties.h"
#if !defined(CONFIG_USER_ONLY)
#include "hw/loader.h"
#endif
@ -217,6 +218,13 @@ static void arm_cpu_initfn(Object *obj)
ARRAY_SIZE(cpu->gt_timer_outputs));
#endif
/* DTB consumers generally don't in fact care what the 'compatible'
* string is, so always provide some string and trust that a hypothetical
* picky DTB consumer will also provide a helpful error message.
*/
cpu->dtb_compatible = "qemu,unknown";
cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE;
if (tcg_enabled() && !inited) {
inited = true;
arm_translate_init();
@ -318,6 +326,8 @@ static ObjectClass *arm_cpu_class_by_name(const char *cpu_model)
static void arm926_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,arm926";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_VFP);
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
@ -331,6 +341,8 @@ static void arm926_initfn(Object *obj)
static void arm946_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,arm946";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_MPU);
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
@ -342,6 +354,8 @@ static void arm946_initfn(Object *obj)
static void arm1026_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,arm1026";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_VFP);
set_feature(&cpu->env, ARM_FEATURE_AUXCR);
@ -374,6 +388,8 @@ static void arm1136_r2_initfn(Object *obj)
* for 1136_r2 (in particular r0p2 does not actually implement most
* of the ID registers).
*/
cpu->dtb_compatible = "arm,arm1136";
set_feature(&cpu->env, ARM_FEATURE_V6);
set_feature(&cpu->env, ARM_FEATURE_VFP);
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
@ -403,6 +419,8 @@ static void arm1136_r2_initfn(Object *obj)
static void arm1136_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,arm1136";
set_feature(&cpu->env, ARM_FEATURE_V6K);
set_feature(&cpu->env, ARM_FEATURE_V6);
set_feature(&cpu->env, ARM_FEATURE_VFP);
@ -433,6 +451,8 @@ static void arm1136_initfn(Object *obj)
static void arm1176_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,arm1176";
set_feature(&cpu->env, ARM_FEATURE_V6K);
set_feature(&cpu->env, ARM_FEATURE_VFP);
set_feature(&cpu->env, ARM_FEATURE_VAPA);
@ -463,6 +483,8 @@ static void arm1176_initfn(Object *obj)
static void arm11mpcore_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,arm11mpcore";
set_feature(&cpu->env, ARM_FEATURE_V6K);
set_feature(&cpu->env, ARM_FEATURE_VFP);
set_feature(&cpu->env, ARM_FEATURE_VAPA);
@ -516,6 +538,8 @@ static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
static void cortex_a8_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,cortex-a8";
set_feature(&cpu->env, ARM_FEATURE_V7);
set_feature(&cpu->env, ARM_FEATURE_VFP3);
set_feature(&cpu->env, ARM_FEATURE_NEON);
@ -580,6 +604,8 @@ static const ARMCPRegInfo cortexa9_cp_reginfo[] = {
static void cortex_a9_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,cortex-a9";
set_feature(&cpu->env, ARM_FEATURE_V7);
set_feature(&cpu->env, ARM_FEATURE_VFP3);
set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
@ -649,6 +675,8 @@ static const ARMCPRegInfo cortexa15_cp_reginfo[] = {
static void cortex_a15_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "arm,cortex-a15";
set_feature(&cpu->env, ARM_FEATURE_V7);
set_feature(&cpu->env, ARM_FEATURE_VFP4);
set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
@ -658,6 +686,7 @@ static void cortex_a15_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
set_feature(&cpu->env, ARM_FEATURE_LPAE);
cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A15;
cpu->midr = 0x412fc0f1;
cpu->reset_fpsid = 0x410430f0;
cpu->mvfr0 = 0x10110222;
@ -697,6 +726,8 @@ static void ti925t_initfn(Object *obj)
static void sa1100_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "intel,sa1100";
set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
cpu->midr = 0x4401A11B;
@ -715,6 +746,8 @@ static void sa1110_initfn(Object *obj)
static void pxa250_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = 0x69052100;
@ -725,6 +758,8 @@ static void pxa250_initfn(Object *obj)
static void pxa255_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = 0x69052d00;
@ -735,6 +770,8 @@ static void pxa255_initfn(Object *obj)
static void pxa260_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = 0x69052903;
@ -745,6 +782,8 @@ static void pxa260_initfn(Object *obj)
static void pxa261_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = 0x69052d05;
@ -755,6 +794,8 @@ static void pxa261_initfn(Object *obj)
static void pxa262_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = 0x69052d06;
@ -765,6 +806,8 @@ static void pxa262_initfn(Object *obj)
static void pxa270a0_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
@ -776,6 +819,8 @@ static void pxa270a0_initfn(Object *obj)
static void pxa270a1_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
@ -787,6 +832,8 @@ static void pxa270a1_initfn(Object *obj)
static void pxa270b0_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
@ -798,6 +845,8 @@ static void pxa270b0_initfn(Object *obj)
static void pxa270b1_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
@ -809,6 +858,8 @@ static void pxa270b1_initfn(Object *obj)
static void pxa270c0_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
@ -820,6 +871,8 @@ static void pxa270c0_initfn(Object *obj)
static void pxa270c5_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
cpu->dtb_compatible = "marvell,xscale";
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
@ -894,6 +947,11 @@ static const ARMCPUInfo arm_cpus[] = {
#endif
};
static Property arm_cpu_properties[] = {
DEFINE_PROP_BOOL("start-powered-off", ARMCPU, start_powered_off, false),
DEFINE_PROP_END_OF_LIST()
};
static void arm_cpu_class_init(ObjectClass *oc, void *data)
{
ARMCPUClass *acc = ARM_CPU_CLASS(oc);
@ -902,6 +960,7 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
acc->parent_realize = dc->realize;
dc->realize = arm_cpu_realizefn;
dc->props = arm_cpu_properties;
acc->parent_reset = cc->reset;
cc->reset = arm_cpu_reset;

13
target-arm/cpu.h
View File

@ -21,6 +21,8 @@
#include "config.h"
#include "kvm-consts.h"
#if defined(TARGET_AARCH64)
/* AArch64 definitions */
# define TARGET_LONG_BITS 64
@ -497,17 +499,6 @@ void armv7m_nvic_complete_irq(void *opaque, int irq);
(((cp) << 16) | ((is64) << 15) | ((crn) << 11) | \
((crm) << 7) | ((opc1) << 3) | (opc2))
/* Note that these must line up with the KVM/ARM register
* ID field definitions (kvm.c will check this, but we
* can't just use the KVM defines here as the kvm headers
* are unavailable to non-KVM-specific files)
*/
#define CP_REG_SIZE_SHIFT 52
#define CP_REG_SIZE_MASK 0x00f0000000000000ULL
#define CP_REG_SIZE_U32 0x0020000000000000ULL
#define CP_REG_SIZE_U64 0x0030000000000000ULL
#define CP_REG_ARM 0x4000000000000000ULL
/* Convert a full 64 bit KVM register ID to the truncated 32 bit
* version used as a key for the coprocessor register hashtable
*/

33
target-arm/helper.c
View File

@ -1173,7 +1173,7 @@ static int vmsa_ttbcr_raw_write(CPUARMState *env, const ARMCPRegInfo *ri,
{
int maskshift = extract32(value, 0, 3);
if (arm_feature(env, ARM_FEATURE_LPAE)) {
if (arm_feature(env, ARM_FEATURE_LPAE) && (value & (1 << 31))) {
value &= ~((7 << 19) | (3 << 14) | (0xf << 3));
} else {
value &= 7;
@ -1842,6 +1842,12 @@ void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf)
(*cpu_fprintf)(f, "Available CPUs:\n");
g_slist_foreach(list, arm_cpu_list_entry, &s);
g_slist_free(list);
#ifdef CONFIG_KVM
/* The 'host' CPU type is dynamically registered only if KVM is
* enabled, so we have to special-case it here:
*/
(*cpu_fprintf)(f, " host (only available in KVM mode)\n");
#endif
}
static void arm_cpu_add_definition(gpointer data, gpointer user_data)
@ -4079,3 +4085,28 @@ float64 VFP_HELPER(muladd, d)(float64 a, float64 b, float64 c, void *fpstp)
float_status *fpst = fpstp;
return float64_muladd(a, b, c, 0, fpst);
}
/* ARMv8 VMAXNM/VMINNM */
float32 VFP_HELPER(maxnm, s)(float32 a, float32 b, void *fpstp)
{
float_status *fpst = fpstp;
return float32_maxnum(a, b, fpst);
}
float64 VFP_HELPER(maxnm, d)(float64 a, float64 b, void *fpstp)
{
float_status *fpst = fpstp;
return float64_maxnum(a, b, fpst);
}
float32 VFP_HELPER(minnm, s)(float32 a, float32 b, void *fpstp)
{
float_status *fpst = fpstp;
return float32_minnum(a, b, fpst);
}
float64 VFP_HELPER(minnm, d)(float64 a, float64 b, void *fpstp)
{
float_status *fpst = fpstp;
return float64_minnum(a, b, fpst);
}

5
target-arm/helper.h
View File

@ -132,6 +132,11 @@ DEF_HELPER_2(neon_fcvt_f32_to_f16, i32, f32, env)
DEF_HELPER_4(vfp_muladdd, f64, f64, f64, f64, ptr)
DEF_HELPER_4(vfp_muladds, f32, f32, f32, f32, ptr)
DEF_HELPER_3(vfp_maxnmd, f64, f64, f64, ptr)
DEF_HELPER_3(vfp_maxnms, f32, f32, f32, ptr)
DEF_HELPER_3(vfp_minnmd, f64, f64, f64, ptr)
DEF_HELPER_3(vfp_minnms, f32, f32, f32, ptr)
DEF_HELPER_3(recps_f32, f32, f32, f32, env)
DEF_HELPER_3(rsqrts_f32, f32, f32, f32, env)
DEF_HELPER_2(recpe_f32, f32, f32, env)

64
target-arm/kvm-consts.h Normal file
View File

@ -0,0 +1,64 @@
/*
* KVM ARM ABI constant definitions
*
* Copyright (c) 2013 Linaro Limited
*
* Provide versions of KVM constant defines that can be used even
* when CONFIG_KVM is not set and we don't have access to the
* KVM headers. If CONFIG_KVM is set, we do a compile-time check
* that we haven't got out of sync somehow.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef ARM_KVM_CONSTS_H
#define ARM_KVM_CONSTS_H
#ifdef CONFIG_KVM
#include "qemu/compiler.h"
#include <linux/kvm.h>
#define MISMATCH_CHECK(X, Y) QEMU_BUILD_BUG_ON(X != Y)
#else
#define MISMATCH_CHECK(X, Y)
#endif
#define CP_REG_SIZE_SHIFT 52
#define CP_REG_SIZE_MASK 0x00f0000000000000ULL
#define CP_REG_SIZE_U32 0x0020000000000000ULL
#define CP_REG_SIZE_U64 0x0030000000000000ULL
#define CP_REG_ARM 0x4000000000000000ULL
MISMATCH_CHECK(CP_REG_SIZE_SHIFT, KVM_REG_SIZE_SHIFT)
MISMATCH_CHECK(CP_REG_SIZE_MASK, KVM_REG_SIZE_MASK)
MISMATCH_CHECK(CP_REG_SIZE_U32, KVM_REG_SIZE_U32)
MISMATCH_CHECK(CP_REG_SIZE_U64, KVM_REG_SIZE_U64)
MISMATCH_CHECK(CP_REG_ARM, KVM_REG_ARM)
#define PSCI_FN_BASE 0x95c1ba5e
#define PSCI_FN(n) (PSCI_FN_BASE + (n))
#define PSCI_FN_CPU_SUSPEND PSCI_FN(0)
#define PSCI_FN_CPU_OFF PSCI_FN(1)
#define PSCI_FN_CPU_ON PSCI_FN(2)
#define PSCI_FN_MIGRATE PSCI_FN(3)
MISMATCH_CHECK(PSCI_FN_CPU_SUSPEND, KVM_PSCI_FN_CPU_SUSPEND)
MISMATCH_CHECK(PSCI_FN_CPU_OFF, KVM_PSCI_FN_CPU_OFF)
MISMATCH_CHECK(PSCI_FN_CPU_ON, KVM_PSCI_FN_CPU_ON)
MISMATCH_CHECK(PSCI_FN_MIGRATE, KVM_PSCI_FN_MIGRATE)
#define QEMU_KVM_ARM_TARGET_CORTEX_A15 0
/* There's no kernel define for this: sentinel value which
* matches no KVM target value for either 64 or 32 bit
*/
#define QEMU_KVM_ARM_TARGET_NONE UINT_MAX
#ifndef TARGET_AARCH64
MISMATCH_CHECK(QEMU_KVM_ARM_TARGET_CORTEX_A15, KVM_ARM_TARGET_CORTEX_A15)
#endif
#undef MISMATCH_CHECK
#endif

243
target-arm/kvm.c
View File

@ -23,25 +23,240 @@
#include "cpu.h"
#include "hw/arm/arm.h"
/* Check that cpu.h's idea of coprocessor fields matches KVM's */
#if (CP_REG_SIZE_SHIFT != KVM_REG_SIZE_SHIFT) || \
(CP_REG_SIZE_MASK != KVM_REG_SIZE_MASK) || \
(CP_REG_SIZE_U32 != KVM_REG_SIZE_U32) || \
(CP_REG_SIZE_U64 != KVM_REG_SIZE_U64) || \
(CP_REG_ARM != KVM_REG_ARM)
#error mismatch between cpu.h and KVM header definitions
#endif
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_LAST_INFO
};
bool kvm_arm_create_scratch_host_vcpu(const uint32_t *cpus_to_try,
int *fdarray,
struct kvm_vcpu_init *init)
{
int ret, kvmfd = -1, vmfd = -1, cpufd = -1;
kvmfd = qemu_open("/dev/kvm", O_RDWR);
if (kvmfd < 0) {
goto err;
}
vmfd = ioctl(kvmfd, KVM_CREATE_VM, 0);
if (vmfd < 0) {
goto err;
}
cpufd = ioctl(vmfd, KVM_CREATE_VCPU, 0);
if (cpufd < 0) {
goto err;
}
ret = ioctl(vmfd, KVM_ARM_PREFERRED_TARGET, init);
if (ret >= 0) {
ret = ioctl(cpufd, KVM_ARM_VCPU_INIT, init);
if (ret < 0) {
goto err;
}
} else {
/* Old kernel which doesn't know about the
* PREFERRED_TARGET ioctl: we know it will only support
* creating one kind of guest CPU which is its preferred
* CPU type.
*/
while (*cpus_to_try != QEMU_KVM_ARM_TARGET_NONE) {
init->target = *cpus_to_try++;
memset(init->features, 0, sizeof(init->features));
ret = ioctl(cpufd, KVM_ARM_VCPU_INIT, init);
if (ret >= 0) {
break;
}
}
if (ret < 0) {
goto err;
}
}
fdarray[0] = kvmfd;
fdarray[1] = vmfd;
fdarray[2] = cpufd;
return true;
err:
if (cpufd >= 0) {
close(cpufd);
}
if (vmfd >= 0) {
close(vmfd);
}
if (kvmfd >= 0) {
close(kvmfd);
}
return false;
}
void kvm_arm_destroy_scratch_host_vcpu(int *fdarray)
{
int i;
for (i = 2; i >= 0; i--) {
close(fdarray[i]);
}
}
static inline void set_feature(uint64_t *features, int feature)
{
*features |= 1ULL << feature;
}
bool kvm_arm_get_host_cpu_features(ARMHostCPUClass *ahcc)
{
/* Identify the feature bits corresponding to the host CPU, and
* fill out the ARMHostCPUClass fields accordingly. To do this
* we have to create a scratch VM, create a single CPU inside it,
* and then query that CPU for the relevant ID registers.
*/
int i, ret, fdarray[3];
uint32_t midr, id_pfr0, id_isar0, mvfr1;
uint64_t features = 0;
/* Old kernels may not know about the PREFERRED_TARGET ioctl: however
* we know these will only support creating one kind of guest CPU,
* which is its preferred CPU type.
*/
static const uint32_t cpus_to_try[] = {
QEMU_KVM_ARM_TARGET_CORTEX_A15,
QEMU_KVM_ARM_TARGET_NONE
};
struct kvm_vcpu_init init;
struct kvm_one_reg idregs[] = {
{
.id = KVM_REG_ARM | KVM_REG_SIZE_U32
| ENCODE_CP_REG(15, 0, 0, 0, 0, 0),
.addr = (uintptr_t)&midr,
},
{
.id = KVM_REG_ARM | KVM_REG_SIZE_U32
| ENCODE_CP_REG(15, 0, 0, 1, 0, 0),
.addr = (uintptr_t)&id_pfr0,
},
{
.id = KVM_REG_ARM | KVM_REG_SIZE_U32
| ENCODE_CP_REG(15, 0, 0, 2, 0, 0),
.addr = (uintptr_t)&id_isar0,
},
{
.id = KVM_REG_ARM | KVM_REG_SIZE_U32
| KVM_REG_ARM_VFP | KVM_REG_ARM_VFP_MVFR1,
.addr = (uintptr_t)&mvfr1,
},
};
if (!kvm_arm_create_scratch_host_vcpu(cpus_to_try, fdarray, &init)) {
return false;
}
ahcc->target = init.target;
/* This is not strictly blessed by the device tree binding docs yet,
* but in practice the kernel does not care about this string so
* there is no point maintaining an KVM_ARM_TARGET_* -> string table.
*/
ahcc->dtb_compatible = "arm,arm-v7";
for (i = 0; i < ARRAY_SIZE(idregs); i++) {
ret = ioctl(fdarray[2], KVM_GET_ONE_REG, &idregs[i]);
if (ret) {
break;
}
}
kvm_arm_destroy_scratch_host_vcpu(fdarray);
if (ret) {
return false;
}
/* Now we've retrieved all the register information we can
* set the feature bits based on the ID register fields.
* We can assume any KVM supporting CPU is at least a v7
* with VFPv3, LPAE and the generic timers; this in turn implies
* most of the other feature bits, but a few must be tested.
*/
set_feature(&features, ARM_FEATURE_V7);
set_feature(&features, ARM_FEATURE_VFP3);
set_feature(&features, ARM_FEATURE_LPAE);
set_feature(&features, ARM_FEATURE_GENERIC_TIMER);
switch (extract32(id_isar0, 24, 4)) {
case 1:
set_feature(&features, ARM_FEATURE_THUMB_DIV);
break;
case 2:
set_feature(&features, ARM_FEATURE_ARM_DIV);
set_feature(&features, ARM_FEATURE_THUMB_DIV);
break;
default:
break;
}
if (extract32(id_pfr0, 12, 4) == 1) {
set_feature(&features, ARM_FEATURE_THUMB2EE);
}
if (extract32(mvfr1, 20, 4) == 1) {
set_feature(&features, ARM_FEATURE_VFP_FP16);
}
if (extract32(mvfr1, 12, 4) == 1) {
set_feature(&features, ARM_FEATURE_NEON);
}
if (extract32(mvfr1, 28, 4) == 1) {
/* FMAC support implies VFPv4 */
set_feature(&features, ARM_FEATURE_VFP4);
}
ahcc->features = features;
return true;
}
static void kvm_arm_host_cpu_class_init(ObjectClass *oc, void *data)
{
ARMHostCPUClass *ahcc = ARM_HOST_CPU_CLASS(oc);
/* All we really need to set up for the 'host' CPU
* is the feature bits -- we rely on the fact that the
* various ID register values in ARMCPU are only used for
* TCG CPUs.
*/
if (!kvm_arm_get_host_cpu_features(ahcc)) {
fprintf(stderr, "Failed to retrieve host CPU features!\n");
abort();
}
}
static void kvm_arm_host_cpu_initfn(Object *obj)
{
ARMHostCPUClass *ahcc = ARM_HOST_CPU_GET_CLASS(obj);
ARMCPU *cpu = ARM_CPU(obj);
CPUARMState *env = &cpu->env;
cpu->kvm_target = ahcc->target;
cpu->dtb_compatible = ahcc->dtb_compatible;
env->features = ahcc->features;
}
static const TypeInfo host_arm_cpu_type_info = {
.name = TYPE_ARM_HOST_CPU,
.parent = TYPE_ARM_CPU,
.instance_init = kvm_arm_host_cpu_initfn,
.class_init = kvm_arm_host_cpu_class_init,
.class_size = sizeof(ARMHostCPUClass),
};
int kvm_arch_init(KVMState *s)
{
/* For ARM interrupt delivery is always asynchronous,
* whether we are using an in-kernel VGIC or not.
*/
kvm_async_interrupts_allowed = true;
type_register_static(&host_arm_cpu_type_info);
return 0;
}
@ -86,8 +301,16 @@ int kvm_arch_init_vcpu(CPUState *cs)
struct kvm_reg_list *rlp;
ARMCPU *cpu = ARM_CPU(cs);
init.target = KVM_ARM_TARGET_CORTEX_A15;
if (cpu->kvm_target == QEMU_KVM_ARM_TARGET_NONE) {
fprintf(stderr, "KVM is not supported for this guest CPU type\n");
return -EINVAL;
}
init.target = cpu->kvm_target;
memset(init.features, 0, sizeof(init.features));
if (cpu->start_powered_off) {
init.features[0] = 1 << KVM_ARM_VCPU_POWER_OFF;
}
ret = kvm_vcpu_ioctl(cs, KVM_ARM_VCPU_INIT, &init);
if (ret) {
return ret;

55
target-arm/kvm_arm.h
View File

@ -62,4 +62,59 @@ bool write_list_to_kvmstate(ARMCPU *cpu);
*/
bool write_kvmstate_to_list(ARMCPU *cpu);
#ifdef CONFIG_KVM
/**
* kvm_arm_create_scratch_host_vcpu:
* @cpus_to_try: array of QEMU_KVM_ARM_TARGET_* values (terminated with
* QEMU_KVM_ARM_TARGET_NONE) to try as fallback if the kernel does not
* know the PREFERRED_TARGET ioctl
* @fdarray: filled in with kvmfd, vmfd, cpufd file descriptors in that order
* @init: filled in with the necessary values for creating a host vcpu
*
* Create a scratch vcpu in its own VM of the type preferred by the host
* kernel (as would be used for '-cpu host'), for purposes of probing it
* for capabilities.
*
* Returns: true on success (and fdarray and init are filled in),
* false on failure (and fdarray and init are not valid).
*/
bool kvm_arm_create_scratch_host_vcpu(const uint32_t *cpus_to_try,
int *fdarray,
struct kvm_vcpu_init *init);
/**
* kvm_arm_destroy_scratch_host_vcpu:
* @fdarray: array of fds as set up by kvm_arm_create_scratch_host_vcpu
*
* Tear down the scratch vcpu created by kvm_arm_create_scratch_host_vcpu.
*/
void kvm_arm_destroy_scratch_host_vcpu(int *fdarray);
#define TYPE_ARM_HOST_CPU "host-" TYPE_ARM_CPU
#define ARM_HOST_CPU_CLASS(klass) \
OBJECT_CLASS_CHECK(ARMHostCPUClass, (klass), TYPE_ARM_HOST_CPU)
#define ARM_HOST_CPU_GET_CLASS(obj) \
OBJECT_GET_CLASS(ARMHostCPUClass, (obj), TYPE_ARM_HOST_CPU)
typedef struct ARMHostCPUClass {
/*< private >*/
ARMCPUClass parent_class;
/*< public >*/
uint64_t features;
uint32_t target;
const char *dtb_compatible;
} ARMHostCPUClass;
/**
* kvm_arm_get_host_cpu_features:
* @ahcc: ARMHostCPUClass to fill in
*
* Probe the capabilities of the host kernel's preferred CPU and fill
* in the ARMHostCPUClass struct accordingly.
*/
bool kvm_arm_get_host_cpu_features(ARMHostCPUClass *ahcc);
#endif
#endif

302
target-arm/translate.c
View File

@ -825,63 +825,57 @@ static inline void store_reg_from_load(CPUARMState *env, DisasContext *s,
* extended if we're a 64 bit core) and data is also
* 32 bits unless specifically doing a 64 bit access.
* These functions work like tcg_gen_qemu_{ld,st}* except
* that their arguments are TCGv_i32 rather than TCGv.
* that the address argument is TCGv_i32 rather than TCGv.
*/
#if TARGET_LONG_BITS == 32
#define DO_GEN_LD(OP) \
static inline void gen_aa32_##OP(TCGv_i32 val, TCGv_i32 addr, int index) \
#define DO_GEN_LD(SUFF, OPC) \
static inline void gen_aa32_ld##SUFF(TCGv_i32 val, TCGv_i32 addr, int index) \
{ \
tcg_gen_qemu_##OP(val, addr, index); \
tcg_gen_qemu_ld_i32(val, addr, index, OPC); \
}
#define DO_GEN_ST(OP) \
static inline void gen_aa32_##OP(TCGv_i32 val, TCGv_i32 addr, int index) \
#define DO_GEN_ST(SUFF, OPC) \
static inline void gen_aa32_st##SUFF(TCGv_i32 val, TCGv_i32 addr, int index) \
{ \
tcg_gen_qemu_##OP(val, addr, index); \
tcg_gen_qemu_st_i32(val, addr, index, OPC); \
}
static inline void gen_aa32_ld64(TCGv_i64 val, TCGv_i32 addr, int index)
{
tcg_gen_qemu_ld64(val, addr, index);
tcg_gen_qemu_ld_i64(val, addr, index, MO_TEQ);
}
static inline void gen_aa32_st64(TCGv_i64 val, TCGv_i32 addr, int index)
{
tcg_gen_qemu_st64(val, addr, index);
tcg_gen_qemu_st_i64(val, addr, index, MO_TEQ);
}
#else
#define DO_GEN_LD(OP) \
static inline void gen_aa32_##OP(TCGv_i32 val, TCGv_i32 addr, int index) \
#define DO_GEN_LD(SUFF, OPC) \
static inline void gen_aa32_ld##SUFF(TCGv_i32 val, TCGv_i32 addr, int index) \
{ \
TCGv addr64 = tcg_temp_new(); \
TCGv val64 = tcg_temp_new(); \
tcg_gen_extu_i32_i64(addr64, addr); \
tcg_gen_qemu_##OP(val64, addr64, index); \
tcg_gen_qemu_ld_i32(val, addr64, index, OPC); \
tcg_temp_free(addr64); \
tcg_gen_trunc_i64_i32(val, val64); \
tcg_temp_free(val64); \
}
#define DO_GEN_ST(OP) \
static inline void gen_aa32_##OP(TCGv_i32 val, TCGv_i32 addr, int index) \
#define DO_GEN_ST(SUFF, OPC) \
static inline void gen_aa32_st##SUFF(TCGv_i32 val, TCGv_i32 addr, int index) \
{ \
TCGv addr64 = tcg_temp_new(); \
TCGv val64 = tcg_temp_new(); \
tcg_gen_extu_i32_i64(addr64, addr); \
tcg_gen_extu_i32_i64(val64, val); \
tcg_gen_qemu_##OP(val64, addr64, index); \
tcg_gen_qemu_st_i32(val, addr64, index, OPC); \
tcg_temp_free(addr64); \
tcg_temp_free(val64); \
}
static inline void gen_aa32_ld64(TCGv_i64 val, TCGv_i32 addr, int index)
{
TCGv addr64 = tcg_temp_new();
tcg_gen_extu_i32_i64(addr64, addr);
tcg_gen_qemu_ld64(val, addr64, index);
tcg_gen_qemu_ld_i64(val, addr64, index, MO_TEQ);
tcg_temp_free(addr64);
}
@ -889,20 +883,20 @@ static inline void gen_aa32_st64(TCGv_i64 val, TCGv_i32 addr, int index)
{
TCGv addr64 = tcg_temp_new();
tcg_gen_extu_i32_i64(addr64, addr);
tcg_gen_qemu_st64(val, addr64, index);
tcg_gen_qemu_st_i64(val, addr64, index, MO_TEQ);
tcg_temp_free(addr64);
}
#endif
DO_GEN_LD(ld8s)
DO_GEN_LD(ld8u)
DO_GEN_LD(ld16s)
DO_GEN_LD(ld16u)
DO_GEN_LD(ld32u)
DO_GEN_ST(st8)
DO_GEN_ST(st16)
DO_GEN_ST(st32)
DO_GEN_LD(8s, MO_SB)
DO_GEN_LD(8u, MO_UB)
DO_GEN_LD(16s, MO_TESW)
DO_GEN_LD(16u, MO_TEUW)
DO_GEN_LD(32u, MO_TEUL)
DO_GEN_ST(8, MO_UB)
DO_GEN_ST(16, MO_TEUW)
DO_GEN_ST(32, MO_TEUL)
static inline void gen_set_pc_im(DisasContext *s, target_ulong val)
{
@ -2614,6 +2608,189 @@ static TCGv_i32 gen_load_and_replicate(DisasContext *s, TCGv_i32 addr, int size)
return tmp;
}
static int handle_vsel(uint32_t insn, uint32_t rd, uint32_t rn, uint32_t rm,
uint32_t dp)
{
uint32_t cc = extract32(insn, 20, 2);
if (dp) {
TCGv_i64 frn, frm, dest;
TCGv_i64 tmp, zero, zf, nf, vf;
zero = tcg_const_i64(0);
frn = tcg_temp_new_i64();
frm = tcg_temp_new_i64();
dest = tcg_temp_new_i64();
zf = tcg_temp_new_i64();
nf = tcg_temp_new_i64();
vf = tcg_temp_new_i64();
tcg_gen_extu_i32_i64(zf, cpu_ZF);
tcg_gen_ext_i32_i64(nf, cpu_NF);
tcg_gen_ext_i32_i64(vf, cpu_VF);
tcg_gen_ld_f64(frn, cpu_env, vfp_reg_offset(dp, rn));
tcg_gen_ld_f64(frm, cpu_env, vfp_reg_offset(dp, rm));
switch (cc) {
case 0: /* eq: Z */
tcg_gen_movcond_i64(TCG_COND_EQ, dest, zf, zero,
frn, frm);
break;
case 1: /* vs: V */
tcg_gen_movcond_i64(TCG_COND_LT, dest, vf, zero,
frn, frm);
break;
case 2: /* ge: N == V -> N ^ V == 0 */
tmp = tcg_temp_new_i64();
tcg_gen_xor_i64(tmp, vf, nf);
tcg_gen_movcond_i64(TCG_COND_GE, dest, tmp, zero,
frn, frm);
tcg_temp_free_i64(tmp);
break;
case 3: /* gt: !Z && N == V */
tcg_gen_movcond_i64(TCG_COND_NE, dest, zf, zero,
frn, frm);
tmp = tcg_temp_new_i64();
tcg_gen_xor_i64(tmp, vf, nf);
tcg_gen_movcond_i64(TCG_COND_GE, dest, tmp, zero,
dest, frm);
tcg_temp_free_i64(tmp);
break;
}
tcg_gen_st_f64(dest, cpu_env, vfp_reg_offset(dp, rd));
tcg_temp_free_i64(frn);
tcg_temp_free_i64(frm);
tcg_temp_free_i64(dest);
tcg_temp_free_i64(zf);
tcg_temp_free_i64(nf);
tcg_temp_free_i64(vf);
tcg_temp_free_i64(zero);
} else {
TCGv_i32 frn, frm, dest;
TCGv_i32 tmp, zero;
zero = tcg_const_i32(0);
frn = tcg_temp_new_i32();
frm = tcg_temp_new_i32();
dest = tcg_temp_new_i32();
tcg_gen_ld_f32(frn, cpu_env, vfp_reg_offset(dp, rn));
tcg_gen_ld_f32(frm, cpu_env, vfp_reg_offset(dp, rm));
switch (cc) {
case 0: /* eq: Z */
tcg_gen_movcond_i32(TCG_COND_EQ, dest, cpu_ZF, zero,
frn, frm);
break;
case 1: /* vs: V */
tcg_gen_movcond_i32(TCG_COND_LT, dest, cpu_VF, zero,
frn, frm);
break;
case 2: /* ge: N == V -> N ^ V == 0 */
tmp = tcg_temp_new_i32();
tcg_gen_xor_i32(tmp, cpu_VF, cpu_NF);
tcg_gen_movcond_i32(TCG_COND_GE, dest, tmp, zero,
frn, frm);
tcg_temp_free_i32(tmp);
break;
case 3: /* gt: !Z && N == V */
tcg_gen_movcond_i32(TCG_COND_NE, dest, cpu_ZF, zero,
frn, frm);
tmp = tcg_temp_new_i32();
tcg_gen_xor_i32(tmp, cpu_VF, cpu_NF);
tcg_gen_movcond_i32(TCG_COND_GE, dest, tmp, zero,
dest, frm);
tcg_temp_free_i32(tmp);
break;
}
tcg_gen_st_f32(dest, cpu_env, vfp_reg_offset(dp, rd));
tcg_temp_free_i32(frn);
tcg_temp_free_i32(frm);
tcg_temp_free_i32(dest);
tcg_temp_free_i32(zero);
}
return 0;
}
static int handle_vminmaxnm(uint32_t insn, uint32_t rd, uint32_t rn,
uint32_t rm, uint32_t dp)
{
uint32_t vmin = extract32(insn, 6, 1);
TCGv_ptr fpst = get_fpstatus_ptr(0);
if (dp) {
TCGv_i64 frn, frm, dest;
frn = tcg_temp_new_i64();
frm = tcg_temp_new_i64();
dest = tcg_temp_new_i64();
tcg_gen_ld_f64(frn, cpu_env, vfp_reg_offset(dp, rn));
tcg_gen_ld_f64(frm, cpu_env, vfp_reg_offset(dp, rm));
if (vmin) {
gen_helper_vfp_minnmd(dest, frn, frm, fpst);
} else {
gen_helper_vfp_maxnmd(dest, frn, frm, fpst);
}
tcg_gen_st_f64(dest, cpu_env, vfp_reg_offset(dp, rd));
tcg_temp_free_i64(frn);
tcg_temp_free_i64(frm);
tcg_temp_free_i64(dest);
} else {
TCGv_i32 frn, frm, dest;
frn = tcg_temp_new_i32();
frm = tcg_temp_new_i32();
dest = tcg_temp_new_i32();
tcg_gen_ld_f32(frn, cpu_env, vfp_reg_offset(dp, rn));
tcg_gen_ld_f32(frm, cpu_env, vfp_reg_offset(dp, rm));
if (vmin) {
gen_helper_vfp_minnms(dest, frn, frm, fpst);
} else {
gen_helper_vfp_maxnms(dest, frn, frm, fpst);
}
tcg_gen_st_f32(dest, cpu_env, vfp_reg_offset(dp, rd));
tcg_temp_free_i32(frn);
tcg_temp_free_i32(frm);
tcg_temp_free_i32(dest);
}
tcg_temp_free_ptr(fpst);
return 0;
}
static int disas_vfp_v8_insn(CPUARMState *env, DisasContext *s, uint32_t insn)
{
uint32_t rd, rn, rm, dp = extract32(insn, 8, 1);
if (!arm_feature(env, ARM_FEATURE_V8)) {
return 1;
}
if (dp) {
VFP_DREG_D(rd, insn);
VFP_DREG_N(rn, insn);
VFP_DREG_M(rm, insn);
} else {
rd = VFP_SREG_D(insn);
rn = VFP_SREG_N(insn);
rm = VFP_SREG_M(insn);
}
if ((insn & 0x0f800e50) == 0x0e000a00) {
return handle_vsel(insn, rd, rn, rm, dp);
} else if ((insn & 0x0fb00e10) == 0x0e800a00) {
return handle_vminmaxnm(insn, rd, rn, rm, dp);
}
return 1;
}
/* Disassemble a VFP instruction. Returns nonzero if an error occurred
(ie. an undefined instruction). */
static int disas_vfp_insn(CPUARMState * env, DisasContext *s, uint32_t insn)
@ -2636,6 +2813,14 @@ static int disas_vfp_insn(CPUARMState * env, DisasContext *s, uint32_t insn)
&& rn != ARM_VFP_MVFR1 && rn != ARM_VFP_MVFR0)
return 1;
}
if (extract32(insn, 28, 4) == 0xf) {
/* Encodings with T=1 (Thumb) or unconditional (ARM):
* only used in v8 and above.
*/
return disas_vfp_v8_insn(env, s, insn);
}
dp = ((insn & 0xf00) == 0xb00);
switch ((insn >> 24) & 0xf) {
case 0xe:
@ -4362,7 +4547,7 @@ static void gen_neon_narrow_op(int op, int u, int size,
#define NEON_3R_FLOAT_CMP 28 /* float VCEQ, VCGE, VCGT */
#define NEON_3R_FLOAT_ACMP 29 /* float VACGE, VACGT, VACLE, VACLT */
#define NEON_3R_FLOAT_MINMAX 30 /* float VMIN, VMAX */
#define NEON_3R_VRECPS_VRSQRTS 31 /* float VRECPS, VRSQRTS */
#define NEON_3R_FLOAT_MISC 31 /* float VRECPS, VRSQRTS, VMAXNM/MINNM */
static const uint8_t neon_3r_sizes[] = {
[NEON_3R_VHADD] = 0x7,
@ -4395,7 +4580,7 @@ static const uint8_t neon_3r_sizes[] = {
[NEON_3R_FLOAT_CMP] = 0x5, /* size bit 1 encodes op */
[NEON_3R_FLOAT_ACMP] = 0x5, /* size bit 1 encodes op */
[NEON_3R_FLOAT_MINMAX] = 0x5, /* size bit 1 encodes op */
[NEON_3R_VRECPS_VRSQRTS] = 0x5, /* size bit 1 encodes op */
[NEON_3R_FLOAT_MISC] = 0x5, /* size bit 1 encodes op */
};
/* Symbolic constants for op fields for Neon 2-register miscellaneous.
@ -4656,8 +4841,9 @@ static int disas_neon_data_insn(CPUARMState * env, DisasContext *s, uint32_t ins
return 1;
}
break;
case NEON_3R_VRECPS_VRSQRTS:
if (u) {
case NEON_3R_FLOAT_MISC:
/* VMAXNM/VMINNM in ARMv8 */
if (u && !arm_feature(env, ARM_FEATURE_V8)) {
return 1;
}
break;
@ -4946,11 +5132,23 @@ static int disas_neon_data_insn(CPUARMState * env, DisasContext *s, uint32_t ins
tcg_temp_free_ptr(fpstatus);
break;
}
case NEON_3R_VRECPS_VRSQRTS:
if (size == 0)
gen_helper_recps_f32(tmp, tmp, tmp2, cpu_env);
else
gen_helper_rsqrts_f32(tmp, tmp, tmp2, cpu_env);
case NEON_3R_FLOAT_MISC:
if (u) {
/* VMAXNM/VMINNM */
TCGv_ptr fpstatus = get_fpstatus_ptr(1);
if (size == 0) {
gen_helper_vfp_maxnms(tmp, tmp, tmp2, fpstatus);
} else {
gen_helper_vfp_minnms(tmp, tmp, tmp2, fpstatus);
}
tcg_temp_free_ptr(fpstatus);
} else {
if (size == 0) {
gen_helper_recps_f32(tmp, tmp, tmp2, cpu_env);
} else {
gen_helper_rsqrts_f32(tmp, tmp, tmp2, cpu_env);
}
}
break;
case NEON_3R_VFM:
{
@ -6296,9 +6494,6 @@ static int disas_coproc_insn(CPUARMState * env, DisasContext *s, uint32_t insn)
return disas_dsp_insn(env, s, insn);
}
return 1;
case 10:
case 11:
return disas_vfp_insn (env, s, insn);
default:
break;
}
@ -6753,6 +6948,13 @@ static void disas_arm_insn(CPUARMState * env, DisasContext *s)
goto illegal_op;
return;
}
if ((insn & 0x0f000e10) == 0x0e000a00) {
/* VFP. */
if (disas_vfp_insn(env, s, insn)) {
goto illegal_op;
}
return;
}
if (((insn & 0x0f30f000) == 0x0510f000) ||
((insn & 0x0f30f010) == 0x0710f000)) {
if ((insn & (1 << 22)) == 0) {
@ -8033,9 +8235,15 @@ static void disas_arm_insn(CPUARMState * env, DisasContext *s)
case 0xc:
case 0xd:
case 0xe:
/* Coprocessor. */
if (disas_coproc_insn(env, s, insn))
if (((insn >> 8) & 0xe) == 10) {
/* VFP. */
if (disas_vfp_insn(env, s, insn)) {
goto illegal_op;
}
} else if (disas_coproc_insn(env, s, insn)) {
/* Coprocessor. */
goto illegal_op;
}
break;
case 0xf:
/* swi */
@ -8765,6 +8973,10 @@ static int disas_thumb2_insn(CPUARMState *env, DisasContext *s, uint16_t insn_hw
insn = (insn & 0xe2ffffff) | ((insn & (1 << 28)) >> 4) | (1 << 28);
if (disas_neon_data_insn(env, s, insn))
goto illegal_op;
} else if (((insn >> 8) & 0xe) == 10) {
if (disas_vfp_insn(env, s, insn)) {
goto illegal_op;
}
} else {
if (insn & (1 << 28))
goto illegal_op;