From 533eb415df2ed9449b5d01def6274a5312b4ddaf Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Wed, 19 Feb 2020 11:08:43 -0500 Subject: [PATCH] arm/aspeed: actually check RAM size MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It's supposed that SOC will check if "-m" provided RAM size is valid by setting "ram-size" property and then board would read back valid (possibly corrected value) to map RAM MemoryReging with valid size. It isn't doing so, since check is called only indirectly from aspeed_sdmc_reset()->asc->compute_conf() or much later when guest writes to configuration register. So depending on "-m" value QEMU end-ups with a warning and an invalid MemoryRegion size allocated and mapped. (examples: -M ast2500-evb -m 1M 0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container 0000000080000000-00000000800fffff (prio 0, ram): ram 0000000080100000-00000000bfffffff (prio 0, i/o): max_ram -M ast2500-evb -m 3G 0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container 0000000080000000-000000013fffffff (prio 0, ram): ram [DETECTED OVERFLOW!] 0000000140000000-00000000bfffffff (prio 0, i/o): max_ram ) On top of that sdmc falls back and reports to guest "default" size, it thinks machine should have. This patch makes ram-size check actually work and changes behavior from a warning later on during machine reset to error_fatal at the moment SOC.ram-size is set so user will have to fix RAM size on CLI to start machine. It also gets out of the way mutable ram-size logic, so we could consolidate RAM allocation logic around pre-allocated hostmem backend (supplied by user or auto created by generic machine code depending on supplied -m/mem-path/mem-prealloc options. Signed-off-by: Igor Mammedov Reviewed-by: Cédric Le Goater Reviewed-by: Richard Henderson Message-Id: <20200219160953.13771-10-imammedo@redhat.com> --- hw/arm/aspeed.c | 13 +++--- hw/misc/aspeed_sdmc.c | 83 +++++++++++++++++++++++++++-------- include/hw/misc/aspeed_sdmc.h | 1 + 3 files changed, 70 insertions(+), 27 deletions(-) diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c index a17843f0d3..805bebd0d0 100644 --- a/hw/arm/aspeed.c +++ b/hw/arm/aspeed.c @@ -204,8 +204,12 @@ static void aspeed_machine_init(MachineState *machine) sc = ASPEED_SOC_GET_CLASS(&bmc->soc); + /* + * This will error out if isize is not supported by memory controller. + */ object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size", - &error_abort); + &error_fatal); + object_property_set_int(OBJECT(&bmc->soc), amc->hw_strap1, "hw-strap1", &error_abort); object_property_set_int(OBJECT(&bmc->soc), amc->hw_strap2, "hw-strap2", @@ -228,13 +232,6 @@ static void aspeed_machine_init(MachineState *machine) object_property_set_bool(OBJECT(&bmc->soc), true, "realized", &error_abort); - /* - * Allocate RAM after the memory controller has checked the size - * was valid. If not, a default value is used. - */ - ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size", - &error_abort); - memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size); memory_region_add_subregion(&bmc->ram_container, 0, &bmc->ram); memory_region_add_subregion(get_system_memory(), diff --git a/hw/misc/aspeed_sdmc.c b/hw/misc/aspeed_sdmc.c index 9c184790cd..7b466bf19a 100644 --- a/hw/misc/aspeed_sdmc.c +++ b/hw/misc/aspeed_sdmc.c @@ -17,6 +17,9 @@ #include "migration/vmstate.h" #include "qapi/error.h" #include "trace.h" +#include "qemu/units.h" +#include "qemu/cutils.h" +#include "qapi/visitor.h" /* Protection Key Register */ #define R_PROT (0x00 / 4) @@ -160,14 +163,9 @@ static int ast2400_rambits(AspeedSDMCState *s) case 512: return ASPEED_SDMC_DRAM_512MB; default: + g_assert_not_reached(); break; } - - /* use a common default */ - warn_report("Invalid RAM size 0x%" PRIx64 ". Using default 256M", - s->ram_size); - s->ram_size = 256 << 20; - return ASPEED_SDMC_DRAM_256MB; } static int ast2500_rambits(AspeedSDMCState *s) @@ -182,14 +180,9 @@ static int ast2500_rambits(AspeedSDMCState *s) case 1024: return ASPEED_SDMC_AST2500_1024MB; default: + g_assert_not_reached(); break; } - - /* use a common default */ - warn_report("Invalid RAM size 0x%" PRIx64 ". Using default 512M", - s->ram_size); - s->ram_size = 512 << 20; - return ASPEED_SDMC_AST2500_512MB; } static int ast2600_rambits(AspeedSDMCState *s) @@ -204,14 +197,9 @@ static int ast2600_rambits(AspeedSDMCState *s) case 2048: return ASPEED_SDMC_AST2600_2048MB; default: + g_assert_not_reached(); break; } - - /* use a common default */ - warn_report("Invalid RAM size 0x%" PRIx64 ". Using default 1024M", - s->ram_size); - s->ram_size = 1024 << 20; - return ASPEED_SDMC_AST2600_1024MB; } static void aspeed_sdmc_reset(DeviceState *dev) @@ -225,6 +213,51 @@ static void aspeed_sdmc_reset(DeviceState *dev) s->regs[R_CONF] = asc->compute_conf(s, 0); } +static void aspeed_sdmc_get_ram_size(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + AspeedSDMCState *s = ASPEED_SDMC(obj); + int64_t value = s->ram_size; + + visit_type_int(v, name, &value, errp); +} + +static void aspeed_sdmc_set_ram_size(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + int i; + char *sz; + int64_t value; + Error *local_err = NULL; + AspeedSDMCState *s = ASPEED_SDMC(obj); + AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s); + + visit_type_int(v, name, &value, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + for (i = 0; asc->valid_ram_sizes[i]; i++) { + if (value == asc->valid_ram_sizes[i]) { + s->ram_size = value; + return; + } + } + + sz = size_to_str(value); + error_setg(&local_err, "Invalid RAM size %s", sz); + g_free(sz); + error_propagate(errp, local_err); +} + +static void aspeed_sdmc_initfn(Object *obj) +{ + object_property_add(obj, "ram-size", "int", + aspeed_sdmc_get_ram_size, aspeed_sdmc_set_ram_size, + NULL, NULL, NULL); +} + static void aspeed_sdmc_realize(DeviceState *dev, Error **errp) { SysBusDevice *sbd = SYS_BUS_DEVICE(dev); @@ -249,7 +282,6 @@ static const VMStateDescription vmstate_aspeed_sdmc = { }; static Property aspeed_sdmc_properties[] = { - DEFINE_PROP_UINT64("ram-size", AspeedSDMCState, ram_size, 0), DEFINE_PROP_UINT64("max-ram-size", AspeedSDMCState, max_ram_size, 0), DEFINE_PROP_END_OF_LIST(), }; @@ -268,6 +300,7 @@ static const TypeInfo aspeed_sdmc_info = { .name = TYPE_ASPEED_SDMC, .parent = TYPE_SYS_BUS_DEVICE, .instance_size = sizeof(AspeedSDMCState), + .instance_init = aspeed_sdmc_initfn, .class_init = aspeed_sdmc_class_init, .class_size = sizeof(AspeedSDMCClass), .abstract = true, @@ -298,6 +331,9 @@ static void aspeed_2400_sdmc_write(AspeedSDMCState *s, uint32_t reg, s->regs[reg] = data; } +static const uint64_t +aspeed_2400_ram_sizes[] = { 64 * MiB, 128 * MiB, 256 * MiB, 512 * MiB, 0}; + static void aspeed_2400_sdmc_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -307,6 +343,7 @@ static void aspeed_2400_sdmc_class_init(ObjectClass *klass, void *data) asc->max_ram_size = 512 << 20; asc->compute_conf = aspeed_2400_sdmc_compute_conf; asc->write = aspeed_2400_sdmc_write; + asc->valid_ram_sizes = aspeed_2400_ram_sizes; } static const TypeInfo aspeed_2400_sdmc_info = { @@ -351,6 +388,9 @@ static void aspeed_2500_sdmc_write(AspeedSDMCState *s, uint32_t reg, s->regs[reg] = data; } +static const uint64_t +aspeed_2500_ram_sizes[] = { 128 * MiB, 256 * MiB, 512 * MiB, 1024 * MiB, 0}; + static void aspeed_2500_sdmc_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -360,6 +400,7 @@ static void aspeed_2500_sdmc_class_init(ObjectClass *klass, void *data) asc->max_ram_size = 1024 << 20; asc->compute_conf = aspeed_2500_sdmc_compute_conf; asc->write = aspeed_2500_sdmc_write; + asc->valid_ram_sizes = aspeed_2500_ram_sizes; } static const TypeInfo aspeed_2500_sdmc_info = { @@ -404,6 +445,9 @@ static void aspeed_2600_sdmc_write(AspeedSDMCState *s, uint32_t reg, s->regs[reg] = data; } +static const uint64_t +aspeed_2600_ram_sizes[] = { 256 * MiB, 512 * MiB, 1024 * MiB, 2048 * MiB, 0}; + static void aspeed_2600_sdmc_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -413,6 +457,7 @@ static void aspeed_2600_sdmc_class_init(ObjectClass *klass, void *data) asc->max_ram_size = 2048 << 20; asc->compute_conf = aspeed_2600_sdmc_compute_conf; asc->write = aspeed_2600_sdmc_write; + asc->valid_ram_sizes = aspeed_2600_ram_sizes; } static const TypeInfo aspeed_2600_sdmc_info = { diff --git a/include/hw/misc/aspeed_sdmc.h b/include/hw/misc/aspeed_sdmc.h index 5dbde59fe7..cea1e67fe3 100644 --- a/include/hw/misc/aspeed_sdmc.h +++ b/include/hw/misc/aspeed_sdmc.h @@ -40,6 +40,7 @@ typedef struct AspeedSDMCClass { SysBusDeviceClass parent_class; uint64_t max_ram_size; + const uint64_t *valid_ram_sizes; uint32_t (*compute_conf)(AspeedSDMCState *s, uint32_t data); void (*write)(AspeedSDMCState *s, uint32_t reg, uint32_t data); } AspeedSDMCClass;