qemu-e2k/hw/arm/armv7m.c

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/*
* ARMV7M System emulation.
*
* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the GPL.
*/
#include "qemu/osdep.h"
#include "hw/arm/armv7m.h"
2016-03-14 09:01:28 +01:00
#include "qapi/error.h"
#include "hw/sysbus.h"
#include "hw/arm/boot.h"
#include "hw/loader.h"
#include "hw/qdev-properties.h"
#include "hw/qdev-clock.h"
#include "elf.h"
#include "sysemu/reset.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qemu/log.h"
#include "target/arm/idau.h"
#include "migration/vmstate.h"
/* Bitbanded IO. Each word corresponds to a single bit. */
/* Get the byte address of the real memory for a bitband access. */
static inline hwaddr bitband_addr(BitBandState *s, hwaddr offset)
{
return s->base | (offset & 0x1ffffff) >> 5;
}
static MemTxResult bitband_read(void *opaque, hwaddr offset,
uint64_t *data, unsigned size, MemTxAttrs attrs)
{
BitBandState *s = opaque;
uint8_t buf[4];
MemTxResult res;
int bitpos, bit;
hwaddr addr;
assert(size <= 4);
/* Find address in underlying memory and round down to multiple of size */
addr = bitband_addr(s, offset) & (-size);
res = address_space_read(&s->source_as, addr, attrs, buf, size);
if (res) {
return res;
}
/* Bit position in the N bytes read... */
bitpos = (offset >> 2) & ((size * 8) - 1);
/* ...converted to byte in buffer and bit in byte */
bit = (buf[bitpos >> 3] >> (bitpos & 7)) & 1;
*data = bit;
return MEMTX_OK;
}
static MemTxResult bitband_write(void *opaque, hwaddr offset, uint64_t value,
unsigned size, MemTxAttrs attrs)
{
BitBandState *s = opaque;
uint8_t buf[4];
MemTxResult res;
int bitpos, bit;
hwaddr addr;
assert(size <= 4);
/* Find address in underlying memory and round down to multiple of size */
addr = bitband_addr(s, offset) & (-size);
res = address_space_read(&s->source_as, addr, attrs, buf, size);
if (res) {
return res;
}
/* Bit position in the N bytes read... */
bitpos = (offset >> 2) & ((size * 8) - 1);
/* ...converted to byte in buffer and bit in byte */
bit = 1 << (bitpos & 7);
if (value & 1) {
buf[bitpos >> 3] |= bit;
} else {
buf[bitpos >> 3] &= ~bit;
}
return address_space_write(&s->source_as, addr, attrs, buf, size);
}
static const MemoryRegionOps bitband_ops = {
.read_with_attrs = bitband_read,
.write_with_attrs = bitband_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl.min_access_size = 1,
.impl.max_access_size = 4,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
};
static void bitband_init(Object *obj)
{
BitBandState *s = BITBAND(obj);
SysBusDevice *dev = SYS_BUS_DEVICE(obj);
memory_region_init_io(&s->iomem, obj, &bitband_ops, s,
"bitband", 0x02000000);
sysbus_init_mmio(dev, &s->iomem);
}
static void bitband_realize(DeviceState *dev, Error **errp)
{
BitBandState *s = BITBAND(dev);
if (!s->source_memory) {
error_setg(errp, "source-memory property not set");
return;
}
address_space_init(&s->source_as, s->source_memory, "bitband-source");
}
/* Board init. */
static const hwaddr bitband_input_addr[ARMV7M_NUM_BITBANDS] = {
0x20000000, 0x40000000
};
static const hwaddr bitband_output_addr[ARMV7M_NUM_BITBANDS] = {
0x22000000, 0x42000000
};
static MemTxResult v7m_sysreg_ns_write(void *opaque, hwaddr addr,
uint64_t value, unsigned size,
MemTxAttrs attrs)
{
MemoryRegion *mr = opaque;
if (attrs.secure) {
/* S accesses to the alias act like NS accesses to the real region */
attrs.secure = 0;
return memory_region_dispatch_write(mr, addr, value,
size_memop(size) | MO_TE, attrs);
} else {
/* NS attrs are RAZ/WI for privileged, and BusFault for user */
if (attrs.user) {
return MEMTX_ERROR;
}
return MEMTX_OK;
}
}
static MemTxResult v7m_sysreg_ns_read(void *opaque, hwaddr addr,
uint64_t *data, unsigned size,
MemTxAttrs attrs)
{
MemoryRegion *mr = opaque;
if (attrs.secure) {
/* S accesses to the alias act like NS accesses to the real region */
attrs.secure = 0;
return memory_region_dispatch_read(mr, addr, data,
size_memop(size) | MO_TE, attrs);
} else {
/* NS attrs are RAZ/WI for privileged, and BusFault for user */
if (attrs.user) {
return MEMTX_ERROR;
}
*data = 0;
return MEMTX_OK;
}
}
static const MemoryRegionOps v7m_sysreg_ns_ops = {
.read_with_attrs = v7m_sysreg_ns_read,
.write_with_attrs = v7m_sysreg_ns_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static MemTxResult v7m_systick_write(void *opaque, hwaddr addr,
uint64_t value, unsigned size,
MemTxAttrs attrs)
{
ARMv7MState *s = opaque;
MemoryRegion *mr;
/* Direct the access to the correct systick */
mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systick[attrs.secure]), 0);
return memory_region_dispatch_write(mr, addr, value,
size_memop(size) | MO_TE, attrs);
}
static MemTxResult v7m_systick_read(void *opaque, hwaddr addr,
uint64_t *data, unsigned size,
MemTxAttrs attrs)
{
ARMv7MState *s = opaque;
MemoryRegion *mr;
/* Direct the access to the correct systick */
mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systick[attrs.secure]), 0);
return memory_region_dispatch_read(mr, addr, data, size_memop(size) | MO_TE,
attrs);
}
static const MemoryRegionOps v7m_systick_ops = {
.read_with_attrs = v7m_systick_read,
.write_with_attrs = v7m_systick_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
/*
* Unassigned portions of the PPB space are RAZ/WI for privileged
* accesses, and fault for non-privileged accesses.
*/
static MemTxResult ppb_default_read(void *opaque, hwaddr addr,
uint64_t *data, unsigned size,
MemTxAttrs attrs)
{
qemu_log_mask(LOG_UNIMP, "Read of unassigned area of PPB: offset 0x%x\n",
(uint32_t)addr);
if (attrs.user) {
return MEMTX_ERROR;
}
*data = 0;
return MEMTX_OK;
}
static MemTxResult ppb_default_write(void *opaque, hwaddr addr,
uint64_t value, unsigned size,
MemTxAttrs attrs)
{
qemu_log_mask(LOG_UNIMP, "Write of unassigned area of PPB: offset 0x%x\n",
(uint32_t)addr);
if (attrs.user) {
return MEMTX_ERROR;
}
return MEMTX_OK;
}
static const MemoryRegionOps ppb_default_ops = {
.read_with_attrs = ppb_default_read,
.write_with_attrs = ppb_default_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid.min_access_size = 1,
.valid.max_access_size = 8,
};
static void armv7m_instance_init(Object *obj)
{
ARMv7MState *s = ARMV7M(obj);
int i;
/* Can't init the cpu here, we don't yet know which model to use */
memory_region_init(&s->container, obj, "armv7m-container", UINT64_MAX);
object_initialize_child(obj, "nvic", &s->nvic, TYPE_NVIC);
object_property_add_alias(obj, "num-irq",
qom: Drop parameter @errp of object_property_add() & friends The only way object_property_add() can fail is when a property with the same name already exists. Since our property names are all hardcoded, failure is a programming error, and the appropriate way to handle it is passing &error_abort. Same for its variants, except for object_property_add_child(), which additionally fails when the child already has a parent. Parentage is also under program control, so this is a programming error, too. We have a bit over 500 callers. Almost half of them pass &error_abort, slightly fewer ignore errors, one test case handles errors, and the remaining few callers pass them to their own callers. The previous few commits demonstrated once again that ignoring programming errors is a bad idea. Of the few ones that pass on errors, several violate the Error API. The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. ich9_pm_add_properties(), sparc32_ledma_realize(), sparc32_dma_realize(), xilinx_axidma_realize(), xilinx_enet_realize() are wrong that way. When the one appropriate choice of argument is &error_abort, letting users pick the argument is a bad idea. Drop parameter @errp and assert the preconditions instead. There's one exception to "duplicate property name is a programming error": the way object_property_add() implements the magic (and undocumented) "automatic arrayification". Don't drop @errp there. Instead, rename object_property_add() to object_property_try_add(), and add the obvious wrapper object_property_add(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200505152926.18877-15-armbru@redhat.com> [Two semantic rebase conflicts resolved]
2020-05-05 17:29:22 +02:00
OBJECT(&s->nvic), "num-irq");
object_initialize_child(obj, "systick-reg-ns", &s->systick[M_REG_NS],
TYPE_SYSTICK);
/*
* We can't initialize the secure systick here, as we don't know
* yet if we need it.
*/
for (i = 0; i < ARRAY_SIZE(s->bitband); i++) {
object_initialize_child(obj, "bitband[*]", &s->bitband[i],
TYPE_BITBAND);
}
s->refclk = qdev_init_clock_in(DEVICE(obj), "refclk", NULL, NULL, 0);
s->cpuclk = qdev_init_clock_in(DEVICE(obj), "cpuclk", NULL, NULL, 0);
}
static void armv7m_realize(DeviceState *dev, Error **errp)
{
ARMv7MState *s = ARMV7M(dev);
SysBusDevice *sbd;
Error *err = NULL;
int i;
if (!s->board_memory) {
error_setg(errp, "memory property was not set");
return;
}
/* cpuclk must be connected; refclk is optional */
if (!clock_has_source(s->cpuclk)) {
error_setg(errp, "armv7m: cpuclk must be connected");
return;
}
memory_region_add_subregion_overlap(&s->container, 0, s->board_memory, -1);
s->cpu = ARM_CPU(object_new_with_props(s->cpu_type, OBJECT(s), "cpu",
&err, NULL));
if (err != NULL) {
error_propagate(errp, err);
return;
}
qom: Put name parameter before value / visitor parameter The object_property_set_FOO() setters take property name and value in an unusual order: void object_property_set_FOO(Object *obj, FOO_TYPE value, const char *name, Error **errp) Having to pass value before name feels grating. Swap them. Same for object_property_set(), object_property_get(), and object_property_parse(). Convert callers with this Coccinelle script: @@ identifier fun = { object_property_get, object_property_parse, object_property_set_str, object_property_set_link, object_property_set_bool, object_property_set_int, object_property_set_uint, object_property_set, object_property_set_qobject }; expression obj, v, name, errp; @@ - fun(obj, v, name, errp) + fun(obj, name, v, errp) Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error message "no position information". Convert that one manually. Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Convert manually. Fails to convert hw/rx/rx-gdbsim.c, because Coccinelle gets confused by RXCPU being used both as typedef and function-like macro there. Convert manually. The other files using RXCPU that way don't need conversion. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200707160613.848843-27-armbru@redhat.com> [Straightforwad conflict with commit 2336172d9b "audio: set default value for pcspk.iobase property" resolved]
2020-07-07 18:05:54 +02:00
object_property_set_link(OBJECT(s->cpu), "memory", OBJECT(&s->container),
&error_abort);
if (object_property_find(OBJECT(s->cpu), "idau")) {
qom: Put name parameter before value / visitor parameter The object_property_set_FOO() setters take property name and value in an unusual order: void object_property_set_FOO(Object *obj, FOO_TYPE value, const char *name, Error **errp) Having to pass value before name feels grating. Swap them. Same for object_property_set(), object_property_get(), and object_property_parse(). Convert callers with this Coccinelle script: @@ identifier fun = { object_property_get, object_property_parse, object_property_set_str, object_property_set_link, object_property_set_bool, object_property_set_int, object_property_set_uint, object_property_set, object_property_set_qobject }; expression obj, v, name, errp; @@ - fun(obj, v, name, errp) + fun(obj, name, v, errp) Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error message "no position information". Convert that one manually. Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Convert manually. Fails to convert hw/rx/rx-gdbsim.c, because Coccinelle gets confused by RXCPU being used both as typedef and function-like macro there. Convert manually. The other files using RXCPU that way don't need conversion. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200707160613.848843-27-armbru@redhat.com> [Straightforwad conflict with commit 2336172d9b "audio: set default value for pcspk.iobase property" resolved]
2020-07-07 18:05:54 +02:00
object_property_set_link(OBJECT(s->cpu), "idau", s->idau,
&error_abort);
}
if (object_property_find(OBJECT(s->cpu), "init-svtor")) {
if (!object_property_set_uint(OBJECT(s->cpu), "init-svtor",
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 18:06:02 +02:00
s->init_svtor, errp)) {
return;
}
}
if (object_property_find(OBJECT(s->cpu), "init-nsvtor")) {
if (!object_property_set_uint(OBJECT(s->cpu), "init-nsvtor",
s->init_nsvtor, errp)) {
return;
}
}
if (object_property_find(OBJECT(s->cpu), "start-powered-off")) {
if (!object_property_set_bool(OBJECT(s->cpu), "start-powered-off",
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 18:06:02 +02:00
s->start_powered_off, errp)) {
return;
}
}
if (object_property_find(OBJECT(s->cpu), "vfp")) {
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 18:06:02 +02:00
if (!object_property_set_bool(OBJECT(s->cpu), "vfp", s->vfp, errp)) {
return;
}
}
if (object_property_find(OBJECT(s->cpu), "dsp")) {
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 18:06:02 +02:00
if (!object_property_set_bool(OBJECT(s->cpu), "dsp", s->dsp, errp)) {
return;
}
}
/*
* Tell the CPU where the NVIC is; it will fail realize if it doesn't
* have one. Similarly, tell the NVIC where its CPU is.
*/
s->cpu->env.nvic = &s->nvic;
s->nvic.cpu = s->cpu;
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 18:06:02 +02:00
if (!qdev_realize(DEVICE(s->cpu), NULL, errp)) {
return;
}
/* Note that we must realize the NVIC after the CPU */
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 18:06:02 +02:00
if (!sysbus_realize(SYS_BUS_DEVICE(&s->nvic), errp)) {
return;
}
/* Alias the NVIC's input and output GPIOs as our own so the board
* code can wire them up. (We do this in realize because the
* NVIC doesn't create the input GPIO array until realize.)
*/
qdev_pass_gpios(DEVICE(&s->nvic), dev, NULL);
qdev_pass_gpios(DEVICE(&s->nvic), dev, "SYSRESETREQ");
qdev_pass_gpios(DEVICE(&s->nvic), dev, "NMI");
/*
* We map various devices into the container MR at their architected
* addresses. In particular, we map everything corresponding to the
* "System PPB" space. This is the range from 0xe0000000 to 0xe00fffff
* and includes the NVIC, the System Control Space (system registers),
* the systick timer, and for CPUs with the Security extension an NS
* banked version of all of these.
*
* The default behaviour for unimplemented registers/ranges
* (for instance the Data Watchpoint and Trace unit at 0xe0001000)
* is to RAZ/WI for privileged access and BusFault for non-privileged
* access.
*
* The NVIC and System Control Space (SCS) starts at 0xe000e000
* and looks like this:
* 0x004 - ICTR
* 0x010 - 0xff - systick
* 0x100..0x7ec - NVIC
* 0x7f0..0xcff - Reserved
* 0xd00..0xd3c - SCS registers
* 0xd40..0xeff - Reserved or Not implemented
* 0xf00 - STIR
*
* Some registers within this space are banked between security states.
* In v8M there is a second range 0xe002e000..0xe002efff which is the
* NonSecure alias SCS; secure accesses to this behave like NS accesses
* to the main SCS range, and non-secure accesses (including when
* the security extension is not implemented) are RAZ/WI.
* Note that both the main SCS range and the alias range are defined
* to be exempt from memory attribution (R_BLJT) and so the memory
* transaction attribute always matches the current CPU security
* state (attrs.secure == env->v7m.secure). In the v7m_sysreg_ns_ops
* wrappers we change attrs.secure to indicate the NS access; so
* generally code determining which banked register to use should
* use attrs.secure; code determining actual behaviour of the system
* should use env->v7m.secure.
*
* Within the PPB space, some MRs overlap, and the priority
* of overlapping regions is:
* - default region (for RAZ/WI and BusFault) : -1
* - system register regions (provided by the NVIC) : 0
* - systick : 1
* This is because the systick device is a small block of registers
* in the middle of the other system control registers.
*/
memory_region_init_io(&s->defaultmem, OBJECT(s), &ppb_default_ops, s,
"nvic-default", 0x100000);
memory_region_add_subregion_overlap(&s->container, 0xe0000000,
&s->defaultmem, -1);
/* Wire the NVIC up to the CPU */
sbd = SYS_BUS_DEVICE(&s->nvic);
sysbus_connect_irq(sbd, 0,
qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_IRQ));
memory_region_add_subregion(&s->container, 0xe000e000,
sysbus_mmio_get_region(sbd, 0));
if (arm_feature(&s->cpu->env, ARM_FEATURE_V8)) {
/* Create the NS alias region for the NVIC sysregs */
memory_region_init_io(&s->sysreg_ns_mem, OBJECT(s),
&v7m_sysreg_ns_ops,
sysbus_mmio_get_region(sbd, 0),
"nvic_sysregs_ns", 0x1000);
memory_region_add_subregion(&s->container, 0xe002e000,
&s->sysreg_ns_mem);
}
/*
* Create and map the systick devices. Note that we only connect
* refclk if it has been connected to us; otherwise the systick
* device gets the wrong answer for clock_has_source(refclk), because
* it has an immediate source (the ARMv7M's clock object) but not
* an ultimate source, and then it won't correctly auto-select the
* CPU clock as its only possible clock source.
*/
if (clock_has_source(s->refclk)) {
qdev_connect_clock_in(DEVICE(&s->systick[M_REG_NS]), "refclk",
s->refclk);
}
qdev_connect_clock_in(DEVICE(&s->systick[M_REG_NS]), "cpuclk", s->cpuclk);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_NS]), errp)) {
return;
}
sysbus_connect_irq(SYS_BUS_DEVICE(&s->systick[M_REG_NS]), 0,
qdev_get_gpio_in_named(DEVICE(&s->nvic),
"systick-trigger", M_REG_NS));
if (arm_feature(&s->cpu->env, ARM_FEATURE_M_SECURITY)) {
/*
* We couldn't init the secure systick device in instance_init
* as we didn't know then if the CPU had the security extensions;
* so we have to do it here.
*/
object_initialize_child(OBJECT(dev), "systick-reg-s",
&s->systick[M_REG_S], TYPE_SYSTICK);
if (clock_has_source(s->refclk)) {
qdev_connect_clock_in(DEVICE(&s->systick[M_REG_S]), "refclk",
s->refclk);
}
qdev_connect_clock_in(DEVICE(&s->systick[M_REG_S]), "cpuclk",
s->cpuclk);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_S]), errp)) {
return;
}
sysbus_connect_irq(SYS_BUS_DEVICE(&s->systick[M_REG_S]), 0,
qdev_get_gpio_in_named(DEVICE(&s->nvic),
"systick-trigger", M_REG_S));
}
memory_region_init_io(&s->systickmem, OBJECT(s),
&v7m_systick_ops, s,
"v7m_systick", 0xe0);
memory_region_add_subregion_overlap(&s->container, 0xe000e010,
&s->systickmem, 1);
if (arm_feature(&s->cpu->env, ARM_FEATURE_V8)) {
memory_region_init_io(&s->systick_ns_mem, OBJECT(s),
&v7m_sysreg_ns_ops, &s->systickmem,
"v7m_systick_ns", 0xe0);
memory_region_add_subregion_overlap(&s->container, 0xe002e010,
&s->systick_ns_mem, 1);
}
/* If the CPU has RAS support, create the RAS register block */
if (cpu_isar_feature(aa32_ras, s->cpu)) {
object_initialize_child(OBJECT(dev), "armv7m-ras",
&s->ras, TYPE_ARMV7M_RAS);
sbd = SYS_BUS_DEVICE(&s->ras);
if (!sysbus_realize(sbd, errp)) {
return;
}
memory_region_add_subregion_overlap(&s->container, 0xe0005000,
sysbus_mmio_get_region(sbd, 0), 1);
}
for (i = 0; i < ARRAY_SIZE(s->bitband); i++) {
if (s->enable_bitband) {
Object *obj = OBJECT(&s->bitband[i]);
SysBusDevice *sbd = SYS_BUS_DEVICE(&s->bitband[i]);
if (!object_property_set_int(obj, "base",
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 18:06:02 +02:00
bitband_input_addr[i], errp)) {
return;
}
qom: Put name parameter before value / visitor parameter The object_property_set_FOO() setters take property name and value in an unusual order: void object_property_set_FOO(Object *obj, FOO_TYPE value, const char *name, Error **errp) Having to pass value before name feels grating. Swap them. Same for object_property_set(), object_property_get(), and object_property_parse(). Convert callers with this Coccinelle script: @@ identifier fun = { object_property_get, object_property_parse, object_property_set_str, object_property_set_link, object_property_set_bool, object_property_set_int, object_property_set_uint, object_property_set, object_property_set_qobject }; expression obj, v, name, errp; @@ - fun(obj, v, name, errp) + fun(obj, name, v, errp) Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error message "no position information". Convert that one manually. Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Convert manually. Fails to convert hw/rx/rx-gdbsim.c, because Coccinelle gets confused by RXCPU being used both as typedef and function-like macro there. Convert manually. The other files using RXCPU that way don't need conversion. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200707160613.848843-27-armbru@redhat.com> [Straightforwad conflict with commit 2336172d9b "audio: set default value for pcspk.iobase property" resolved]
2020-07-07 18:05:54 +02:00
object_property_set_link(obj, "source-memory",
OBJECT(s->board_memory), &error_abort);
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 18:06:02 +02:00
if (!sysbus_realize(SYS_BUS_DEVICE(obj), errp)) {
return;
}
memory_region_add_subregion(&s->container, bitband_output_addr[i],
sysbus_mmio_get_region(sbd, 0));
} else {
object_unparent(OBJECT(&s->bitband[i]));
}
}
}
static Property armv7m_properties[] = {
arm: drop intermediate cpu_model -> cpu type parsing and use cpu type directly there are 2 use cases to deal with: 1: fixed CPU models per board/soc 2: boards with user configurable cpu_model and fallback to default cpu_model if user hasn't specified one explicitly For the 1st drop intermediate cpu_model parsing and use const cpu type directly, which replaces: typename = object_class_get_name( cpu_class_by_name(TYPE_ARM_CPU, cpu_model)) object_new(typename) with object_new(FOO_CPU_TYPE_NAME) or cpu_generic_init(BASE_CPU_TYPE, "my cpu model") with cpu_create(FOO_CPU_TYPE_NAME) as result 1st use case doesn't have to invoke not necessary translation and not needed code is removed. For the 2nd 1: set default cpu type with MachineClass::default_cpu_type and 2: use generic cpu_model parsing that done before machine_init() is run and: 2.1: drop custom cpu_model parsing where pattern is: typename = object_class_get_name( cpu_class_by_name(TYPE_ARM_CPU, cpu_model)) [parse_features(typename, cpu_model, &err) ] 2.2: or replace cpu_generic_init() which does what 2.1 does + create_cpu(typename) with just create_cpu(machine->cpu_type) as result cpu_name -> cpu_type translation is done using generic machine code one including parsing optional features if supported/present (removes a bunch of duplicated cpu_model parsing code) and default cpu type is defined in an uniform way within machine_class_init callbacks instead of adhoc places in boadr's machine_init code. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1505318697-77161-6-git-send-email-imammedo@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-09-13 18:04:57 +02:00
DEFINE_PROP_STRING("cpu-type", ARMv7MState, cpu_type),
DEFINE_PROP_LINK("memory", ARMv7MState, board_memory, TYPE_MEMORY_REGION,
MemoryRegion *),
DEFINE_PROP_LINK("idau", ARMv7MState, idau, TYPE_IDAU_INTERFACE, Object *),
DEFINE_PROP_UINT32("init-svtor", ARMv7MState, init_svtor, 0),
DEFINE_PROP_UINT32("init-nsvtor", ARMv7MState, init_nsvtor, 0),
DEFINE_PROP_BOOL("enable-bitband", ARMv7MState, enable_bitband, false),
DEFINE_PROP_BOOL("start-powered-off", ARMv7MState, start_powered_off,
false),
DEFINE_PROP_BOOL("vfp", ARMv7MState, vfp, true),
DEFINE_PROP_BOOL("dsp", ARMv7MState, dsp, true),
DEFINE_PROP_END_OF_LIST(),
};
static const VMStateDescription vmstate_armv7m = {
.name = "armv7m",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_CLOCK(refclk, ARMv7MState),
VMSTATE_CLOCK(cpuclk, ARMv7MState),
VMSTATE_END_OF_LIST()
}
};
static void armv7m_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = armv7m_realize;
dc->vmsd = &vmstate_armv7m;
device_class_set_props(dc, armv7m_properties);
}
static const TypeInfo armv7m_info = {
.name = TYPE_ARMV7M,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(ARMv7MState),
.instance_init = armv7m_instance_init,
.class_init = armv7m_class_init,
};
static void armv7m_reset(void *opaque)
{
ARMCPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
void armv7m_load_kernel(ARMCPU *cpu, const char *kernel_filename, int mem_size)
{
int image_size;
uint64_t entry;
int big_endian;
AddressSpace *as;
int asidx;
CPUState *cs = CPU(cpu);
#ifdef TARGET_WORDS_BIGENDIAN
big_endian = 1;
#else
big_endian = 0;
#endif
if (arm_feature(&cpu->env, ARM_FEATURE_EL3)) {
asidx = ARMASIdx_S;
} else {
asidx = ARMASIdx_NS;
}
as = cpu_get_address_space(cs, asidx);
if (kernel_filename) {
image_size = load_elf_as(kernel_filename, NULL, NULL, NULL,
&entry, NULL, NULL,
NULL, big_endian, EM_ARM, 1, 0, as);
if (image_size < 0) {
image_size = load_image_targphys_as(kernel_filename, 0,
mem_size, as);
}
if (image_size < 0) {
error_report("Could not load kernel '%s'", kernel_filename);
exit(1);
}
}
/* CPU objects (unlike devices) are not automatically reset on system
* reset, so we must always register a handler to do so. Unlike
* A-profile CPUs, we don't need to do anything special in the
* handler to arrange that it starts correctly.
* This is arguably the wrong place to do this, but it matches the
* way A-profile does it. Note that this means that every M profile
* board must call this function!
*/
qemu_register_reset(armv7m_reset, cpu);
}
static Property bitband_properties[] = {
DEFINE_PROP_UINT32("base", BitBandState, base, 0),
DEFINE_PROP_LINK("source-memory", BitBandState, source_memory,
TYPE_MEMORY_REGION, MemoryRegion *),
DEFINE_PROP_END_OF_LIST(),
};
static void bitband_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = bitband_realize;
device_class_set_props(dc, bitband_properties);
}
static const TypeInfo bitband_info = {
.name = TYPE_BITBAND,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(BitBandState),
.instance_init = bitband_init,
.class_init = bitband_class_init,
};
static void armv7m_register_types(void)
{
type_register_static(&bitband_info);
type_register_static(&armv7m_info);
}
type_init(armv7m_register_types)