diff options
| -rw-r--r-- | hw/acpi/cxl.c | 76 | ||||
| -rw-r--r-- | hw/cxl/cxl-host-stubs.c | 7 | ||||
| -rw-r--r-- | hw/cxl/cxl-host.c | 167 | ||||
| -rw-r--r-- | hw/i386/pc.c | 50 | ||||
| -rw-r--r-- | include/hw/cxl/cxl.h | 4 | ||||
| -rw-r--r-- | include/hw/cxl/cxl_host.h | 5 |
6 files changed, 214 insertions, 95 deletions
diff --git a/hw/acpi/cxl.c b/hw/acpi/cxl.c index 9cd7905ea2..75d5b30bb8 100644 --- a/hw/acpi/cxl.c +++ b/hw/acpi/cxl.c @@ -22,6 +22,7 @@ #include "hw/pci/pci_bridge.h" #include "hw/pci/pci_host.h" #include "hw/cxl/cxl.h" +#include "hw/cxl/cxl_host.h" #include "hw/mem/memory-device.h" #include "hw/acpi/acpi.h" #include "hw/acpi/aml-build.h" @@ -135,55 +136,52 @@ static void cedt_build_chbs(GArray *table_data, PXBCXLDev *cxl) * Interleave ways encoding in CXL 2.0 ECN: 3, 6, 12 and 16-way memory * interleaving. */ -static void cedt_build_cfmws(GArray *table_data, CXLState *cxls) +static void cedt_build_cfmws(CXLFixedWindow *fw, Aml *cedt) { - GList *it; + GArray *table_data = cedt->buf; + int i; - for (it = cxls->fixed_windows; it; it = it->next) { - CXLFixedWindow *fw = it->data; - int i; - - /* Type */ - build_append_int_noprefix(table_data, 1, 1); + /* Type */ + build_append_int_noprefix(table_data, 1, 1); - /* Reserved */ - build_append_int_noprefix(table_data, 0, 1); + /* Reserved */ + build_append_int_noprefix(table_data, 0, 1); - /* Record Length */ - build_append_int_noprefix(table_data, 36 + 4 * fw->num_targets, 2); + /* Record Length */ + build_append_int_noprefix(table_data, 36 + 4 * fw->num_targets, 2); - /* Reserved */ - build_append_int_noprefix(table_data, 0, 4); + /* Reserved */ + build_append_int_noprefix(table_data, 0, 4); - /* Base HPA */ - build_append_int_noprefix(table_data, fw->mr.addr, 8); + /* Base HPA */ + build_append_int_noprefix(table_data, fw->mr.addr, 8); - /* Window Size */ - build_append_int_noprefix(table_data, fw->size, 8); + /* Window Size */ + build_append_int_noprefix(table_data, fw->size, 8); - /* Host Bridge Interleave Ways */ - build_append_int_noprefix(table_data, fw->enc_int_ways, 1); + /* Host Bridge Interleave Ways */ + build_append_int_noprefix(table_data, fw->enc_int_ways, 1); - /* Host Bridge Interleave Arithmetic */ - build_append_int_noprefix(table_data, 0, 1); + /* Host Bridge Interleave Arithmetic */ + build_append_int_noprefix(table_data, 0, 1); - /* Reserved */ - build_append_int_noprefix(table_data, 0, 2); + /* Reserved */ + build_append_int_noprefix(table_data, 0, 2); - /* Host Bridge Interleave Granularity */ - build_append_int_noprefix(table_data, fw->enc_int_gran, 4); + /* Host Bridge Interleave Granularity */ + build_append_int_noprefix(table_data, fw->enc_int_gran, 4); - /* Window Restrictions */ - build_append_int_noprefix(table_data, 0x0f, 2); /* No restrictions */ + /* Window Restrictions */ + build_append_int_noprefix(table_data, 0x0f, 2); - /* QTG ID */ - build_append_int_noprefix(table_data, 0, 2); + /* QTG ID */ + build_append_int_noprefix(table_data, 0, 2); - /* Host Bridge List (list of UIDs - currently bus_nr) */ - for (i = 0; i < fw->num_targets; i++) { - g_assert(fw->target_hbs[i]); - build_append_int_noprefix(table_data, PXB_DEV(fw->target_hbs[i])->bus_nr, 4); - } + /* Host Bridge List (list of UIDs - currently bus_nr) */ + for (i = 0; i < fw->num_targets; i++) { + g_assert(fw->target_hbs[i]); + build_append_int_noprefix(table_data, + PXB_DEV(fw->target_hbs[i])->bus_nr, 4); } } @@ -202,6 +200,7 @@ void cxl_build_cedt(GArray *table_offsets, GArray *table_data, BIOSLinker *linker, const char *oem_id, const char *oem_table_id, CXLState *cxl_state) { + GSList *cfmws_list, *iter; Aml *cedt; AcpiTable table = { .sig = "CEDT", .rev = 1, .oem_id = oem_id, .oem_table_id = oem_table_id }; @@ -213,7 +212,12 @@ void cxl_build_cedt(GArray *table_offsets, GArray *table_data, /* reserve space for CEDT header */ object_child_foreach_recursive(object_get_root(), cxl_foreach_pxb_hb, cedt); - cedt_build_cfmws(cedt->buf, cxl_state); + + cfmws_list = cxl_fmws_get_all_sorted(); + for (iter = cfmws_list; iter; iter = iter->next) { + cedt_build_cfmws(CXL_FMW(iter->data), cedt); + } + g_slist_free(cfmws_list); /* copy AML table into ACPI tables blob and patch header there */ g_array_append_vals(table_data, cedt->buf->data, cedt->buf->len); diff --git a/hw/cxl/cxl-host-stubs.c b/hw/cxl/cxl-host-stubs.c index cae4afcdde..c015baac81 100644 --- a/hw/cxl/cxl-host-stubs.c +++ b/hw/cxl/cxl-host-stubs.c @@ -8,8 +8,13 @@ #include "hw/cxl/cxl.h" #include "hw/cxl/cxl_host.h" -void cxl_fmws_link_targets(CXLState *stat, Error **errp) {}; +void cxl_fmws_link_targets(Error **errp) {}; void cxl_machine_init(Object *obj, CXLState *state) {}; void cxl_hook_up_pxb_registers(PCIBus *bus, CXLState *state, Error **errp) {}; +hwaddr cxl_fmws_set_memmap(hwaddr base, hwaddr max_addr) +{ + return base; +}; +void cxl_fmws_update_mmio(void) {}; const MemoryRegionOps cfmws_ops; diff --git a/hw/cxl/cxl-host.c b/hw/cxl/cxl-host.c index b7aa429ddf..5c2ce25a19 100644 --- a/hw/cxl/cxl-host.c +++ b/hw/cxl/cxl-host.c @@ -22,12 +22,12 @@ #include "hw/pci/pcie_port.h" #include "hw/pci-bridge/pci_expander_bridge.h" -static void cxl_fixed_memory_window_config(CXLState *cxl_state, - CXLFixedMemoryWindowOptions *object, +static void cxl_fixed_memory_window_config(CXLFixedMemoryWindowOptions *object, int index, Error **errp) { ERRP_GUARD(); - g_autofree CXLFixedWindow *fw = g_malloc0(sizeof(*fw)); + DeviceState *dev = qdev_new(TYPE_CXL_FMW); + CXLFixedWindow *fw = CXL_FMW(dev); strList *target; int i; @@ -67,35 +67,39 @@ static void cxl_fixed_memory_window_config(CXLState *cxl_state, fw->targets[i] = g_strdup(target->value); } - cxl_state->fixed_windows = g_list_append(cxl_state->fixed_windows, - g_steal_pointer(&fw)); + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), errp); } -void cxl_fmws_link_targets(CXLState *cxl_state, Error **errp) +static int cxl_fmws_link(Object *obj, void *opaque) { - if (cxl_state && cxl_state->fixed_windows) { - GList *it; - - for (it = cxl_state->fixed_windows; it; it = it->next) { - CXLFixedWindow *fw = it->data; - int i; - - for (i = 0; i < fw->num_targets; i++) { - Object *o; - bool ambig; - - o = object_resolve_path_type(fw->targets[i], - TYPE_PXB_CXL_DEV, - &ambig); - if (!o) { - error_setg(errp, "Could not resolve CXLFM target %s", - fw->targets[i]); - return; - } - fw->target_hbs[i] = PXB_CXL_DEV(o); - } + struct CXLFixedWindow *fw; + int i; + + if (!object_dynamic_cast(obj, TYPE_CXL_FMW)) { + return 0; + } + fw = CXL_FMW(obj); + + for (i = 0; i < fw->num_targets; i++) { + Object *o; + bool ambig; + + o = object_resolve_path_type(fw->targets[i], TYPE_PXB_CXL_DEV, + &ambig); + if (!o) { + error_setg(&error_fatal, "Could not resolve CXLFM target %s", + fw->targets[i]); + return 1; } + fw->target_hbs[i] = PXB_CXL_DEV(o); } + return 0; +} + +void cxl_fmws_link_targets(Error **errp) +{ + /* Order doesn't matter for this, so no need to build list */ + object_child_foreach_recursive(object_get_root(), cxl_fmws_link, NULL); } static bool cxl_hdm_find_target(uint32_t *cache_mem, hwaddr addr, @@ -335,7 +339,7 @@ static void machine_set_cfmw(Object *obj, Visitor *v, const char *name, } for (it = cfmw_list, index = 0; it; it = it->next, index++) { - cxl_fixed_memory_window_config(state, it->value, index, errp); + cxl_fixed_memory_window_config(it->value, index, errp); } state->cfmw_list = cfmw_list; } @@ -373,3 +377,110 @@ void cxl_hook_up_pxb_registers(PCIBus *bus, CXLState *state, Error **errp) } } } + +static int cxl_fmws_find(Object *obj, void *opaque) +{ + GSList **list = opaque; + + if (!object_dynamic_cast(obj, TYPE_CXL_FMW)) { + return 0; + } + *list = g_slist_prepend(*list, obj); + + return 0; +} + +static GSList *cxl_fmws_get_all(void) +{ + GSList *list = NULL; + + object_child_foreach_recursive(object_get_root(), cxl_fmws_find, &list); + + return list; +} + +static gint cfmws_cmp(gconstpointer a, gconstpointer b, gpointer d) +{ + const struct CXLFixedWindow *ap = a; + const struct CXLFixedWindow *bp = b; + + return ap->index > bp->index; +} + +GSList *cxl_fmws_get_all_sorted(void) +{ + return g_slist_sort_with_data(cxl_fmws_get_all(), cfmws_cmp, NULL); +} + +static int cxl_fmws_mmio_map(Object *obj, void *opaque) +{ + struct CXLFixedWindow *fw; + + if (!object_dynamic_cast(obj, TYPE_CXL_FMW)) { + return 0; + } + fw = CXL_FMW(obj); + sysbus_mmio_map(SYS_BUS_DEVICE(fw), 0, fw->base); + + return 0; +} + +void cxl_fmws_update_mmio(void) +{ + /* Ordering is not required for this */ + object_child_foreach_recursive(object_get_root(), cxl_fmws_mmio_map, NULL); +} + +hwaddr cxl_fmws_set_memmap(hwaddr base, hwaddr max_addr) +{ + GSList *cfmws_list, *iter; + CXLFixedWindow *fw; + + cfmws_list = cxl_fmws_get_all_sorted(); + for (iter = cfmws_list; iter; iter = iter->next) { + fw = CXL_FMW(iter->data); + if (base + fw->size <= max_addr) { + fw->base = base; + base += fw->size; + } + } + g_slist_free(cfmws_list); + + return base; +} + +static void cxl_fmw_realize(DeviceState *dev, Error **errp) +{ + CXLFixedWindow *fw = CXL_FMW(dev); + + memory_region_init_io(&fw->mr, OBJECT(dev), &cfmws_ops, fw, + "cxl-fixed-memory-region", fw->size); + sysbus_init_mmio(SYS_BUS_DEVICE(dev), &fw->mr); +} + +/* + * Note: Fixed memory windows represent fixed address decoders on the host and + * as such have no dynamic state to reset or migrate + */ +static void cxl_fmw_class_init(ObjectClass *klass, const void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->desc = "CXL Fixed Memory Window"; + dc->realize = cxl_fmw_realize; + /* Reason - created by machines as tightly coupled to machine memory map */ + dc->user_creatable = false; +} + +static const TypeInfo cxl_fmw_info = { + .name = TYPE_CXL_FMW, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(CXLFixedWindow), + .class_init = cxl_fmw_class_init, +}; + +static void cxl_host_register_types(void) +{ + type_register_static(&cxl_fmw_info); +} +type_init(cxl_host_register_types) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index b211633575..860346d6b7 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -609,7 +609,7 @@ void pc_machine_done(Notifier *notifier, void *data) &error_fatal); if (pcms->cxl_devices_state.is_enabled) { - cxl_fmws_link_targets(&pcms->cxl_devices_state, &error_fatal); + cxl_fmws_link_targets(&error_fatal); } /* set the number of CPUs */ @@ -718,20 +718,28 @@ static uint64_t pc_get_cxl_range_start(PCMachineState *pcms) return cxl_base; } -static uint64_t pc_get_cxl_range_end(PCMachineState *pcms) +static int cxl_get_fmw_end(Object *obj, void *opaque) { - uint64_t start = pc_get_cxl_range_start(pcms) + MiB; + struct CXLFixedWindow *fw; + uint64_t *start = opaque; - if (pcms->cxl_devices_state.fixed_windows) { - GList *it; - - start = ROUND_UP(start, 256 * MiB); - for (it = pcms->cxl_devices_state.fixed_windows; it; it = it->next) { - CXLFixedWindow *fw = it->data; - start += fw->size; - } + if (!object_dynamic_cast(obj, TYPE_CXL_FMW)) { + return 0; } + fw = CXL_FMW(obj); + + *start += fw->size; + return 0; +} + +static uint64_t pc_get_cxl_range_end(PCMachineState *pcms) +{ + uint64_t start = pc_get_cxl_range_start(pcms) + MiB; + + /* Ordering doesn't matter so no need to build a sorted list */ + object_child_foreach_recursive(object_get_root(), cxl_get_fmw_end, + &start); return start; } @@ -933,23 +941,9 @@ void pc_memory_init(PCMachineState *pcms, cxl_base = pc_get_cxl_range_start(pcms); memory_region_init(mr, OBJECT(machine), "cxl_host_reg", cxl_size); memory_region_add_subregion(system_memory, cxl_base, mr); - cxl_resv_end = cxl_base + cxl_size; - if (pcms->cxl_devices_state.fixed_windows) { - hwaddr cxl_fmw_base; - GList *it; - - cxl_fmw_base = ROUND_UP(cxl_base + cxl_size, 256 * MiB); - for (it = pcms->cxl_devices_state.fixed_windows; it; it = it->next) { - CXLFixedWindow *fw = it->data; - - fw->base = cxl_fmw_base; - memory_region_init_io(&fw->mr, OBJECT(machine), &cfmws_ops, fw, - "cxl-fixed-memory-region", fw->size); - memory_region_add_subregion(system_memory, fw->base, &fw->mr); - cxl_fmw_base += fw->size; - cxl_resv_end = cxl_fmw_base; - } - } + cxl_base = ROUND_UP(cxl_base + cxl_size, 256 * MiB); + cxl_resv_end = cxl_fmws_set_memmap(cxl_base, maxphysaddr); + cxl_fmws_update_mmio(); } /* Initialize PC system firmware */ diff --git a/include/hw/cxl/cxl.h b/include/hw/cxl/cxl.h index b2bcce7ed6..de66ab8c35 100644 --- a/include/hw/cxl/cxl.h +++ b/include/hw/cxl/cxl.h @@ -27,6 +27,7 @@ typedef struct PXBCXLDev PXBCXLDev; typedef struct CXLFixedWindow { + SysBusDevice parent_obj; int index; uint64_t size; char **targets; @@ -38,12 +39,13 @@ typedef struct CXLFixedWindow { MemoryRegion mr; hwaddr base; } CXLFixedWindow; +#define TYPE_CXL_FMW "cxl-fmw" +OBJECT_DECLARE_SIMPLE_TYPE(CXLFixedWindow, CXL_FMW) typedef struct CXLState { bool is_enabled; MemoryRegion host_mr; unsigned int next_mr_idx; - GList *fixed_windows; CXLFixedMemoryWindowOptionsList *cfmw_list; } CXLState; diff --git a/include/hw/cxl/cxl_host.h b/include/hw/cxl/cxl_host.h index c9bc9c7c50..cd3c368c86 100644 --- a/include/hw/cxl/cxl_host.h +++ b/include/hw/cxl/cxl_host.h @@ -14,8 +14,11 @@ #define CXL_HOST_H void cxl_machine_init(Object *obj, CXLState *state); -void cxl_fmws_link_targets(CXLState *stat, Error **errp); +void cxl_fmws_link_targets(Error **errp); void cxl_hook_up_pxb_registers(PCIBus *bus, CXLState *state, Error **errp); +hwaddr cxl_fmws_set_memmap(hwaddr base, hwaddr max_addr); +void cxl_fmws_update_mmio(void); +GSList *cxl_fmws_get_all_sorted(void); extern const MemoryRegionOps cfmws_ops; |