/* * Memory hotplug AML code of DSDT ACPI table * * Copyright (C) 2015 Red Hat Inc * * Author: Igor Mammedov * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. */ #include "qemu/osdep.h" #include "hw/acpi/memory_hotplug.h" #include "include/hw/acpi/pc-hotplug.h" #include "hw/boards.h" void build_memory_hotplug_aml(Aml *ctx, uint32_t nr_mem, uint16_t io_base, uint16_t io_len) { Aml *ifctx; Aml *method; Aml *pci_scope; Aml *mem_ctrl_dev; /* scope for memory hotplug controller device node */ pci_scope = aml_scope("_SB.PCI0"); mem_ctrl_dev = aml_device(MEMORY_HOTPLUG_DEVICE); { Aml *one = aml_int(1); Aml *zero = aml_int(0); Aml *ret_val = aml_local(0); Aml *slot_arg0 = aml_arg(0); Aml *slots_nr = aml_name(MEMORY_SLOTS_NUMBER); Aml *ctrl_lock = aml_name(MEMORY_SLOT_LOCK); Aml *slot_selector = aml_name(MEMORY_SLOT_SLECTOR); aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06"))); aml_append(mem_ctrl_dev, aml_name_decl("_UID", aml_string("Memory hotplug resources"))); method = aml_method("_STA", 0, AML_NOTSERIALIZED); ifctx = aml_if(aml_equal(slots_nr, zero)); { aml_append(ifctx, aml_return(zero)); } aml_append(method, ifctx); /* present, functioning, decoding, not shown in UI */ aml_append(method, aml_return(aml_int(0xB))); aml_append(mem_ctrl_dev, method); aml_append(mem_ctrl_dev, aml_mutex(MEMORY_SLOT_LOCK, 0)); method = aml_method(MEMORY_SLOT_SCAN_METHOD, 0, AML_NOTSERIALIZED); { Aml *else_ctx; Aml *while_ctx; Aml *idx = aml_local(0); Aml *eject_req = aml_int(3); Aml *dev_chk = aml_int(1); ifctx = aml_if(aml_equal(slots_nr, zero)); { aml_append(ifctx, aml_return(zero)); } aml_append(method, ifctx); aml_append(method, aml_store(zero, idx)); aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); /* build AML that: * loops over all slots and Notifies DIMMs with * Device Check or Eject Request notifications if * slot has corresponding status bit set and clears * slot status. */ while_ctx = aml_while(aml_lless(idx, slots_nr)); { Aml *ins_evt = aml_name(MEMORY_SLOT_INSERT_EVENT); Aml *rm_evt = aml_name(MEMORY_SLOT_REMOVE_EVENT); aml_append(while_ctx, aml_store(idx, slot_selector)); ifctx = aml_if(aml_equal(ins_evt, one)); { aml_append(ifctx, aml_call2(MEMORY_SLOT_NOTIFY_METHOD, idx, dev_chk)); aml_append(ifctx, aml_store(one, ins_evt)); } aml_append(while_ctx, ifctx); else_ctx = aml_else(); ifctx = aml_if(aml_equal(rm_evt, one)); { aml_append(ifctx, aml_call2(MEMORY_SLOT_NOTIFY_METHOD, idx, eject_req)); aml_append(ifctx, aml_store(one, rm_evt)); } aml_append(else_ctx, ifctx); aml_append(while_ctx, else_ctx); aml_append(while_ctx, aml_add(idx, one, idx)); } aml_append(method, while_ctx); aml_append(method, aml_release(ctrl_lock)); aml_append(method, aml_return(one)); } aml_append(mem_ctrl_dev, method); method = aml_method(MEMORY_SLOT_STATUS_METHOD, 1, AML_NOTSERIALIZED); { Aml *slot_enabled = aml_name(MEMORY_SLOT_ENABLED); aml_append(method, aml_store(zero, ret_val)); aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); aml_append(method, aml_store(aml_to_integer(slot_arg0), slot_selector)); ifctx = aml_if(aml_equal(slot_enabled, one)); { aml_append(ifctx, aml_store(aml_int(0xF), ret_val)); } aml_append(method, ifctx); aml_append(method, aml_release(ctrl_lock)); aml_append(method, aml_return(ret_val)); } aml_append(mem_ctrl_dev, method); method = aml_method(MEMORY_SLOT_CRS_METHOD, 1, AML_SERIALIZED); { Aml *mr64 = aml_name("MR64"); Aml *mr32 = aml_name("MR32"); Aml *crs_tmpl = aml_resource_template(); Aml *minl = aml_name("MINL"); Aml *minh = aml_name("MINH"); Aml *maxl = aml_name("MAXL"); Aml *maxh = aml_name("MAXH"); Aml *lenl = aml_name("LENL"); Aml *lenh = aml_name("LENH"); aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); aml_append(method, aml_store(aml_to_integer(slot_arg0), slot_selector)); aml_append(crs_tmpl, aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_CACHEABLE, AML_READ_WRITE, 0, 0x0, 0xFFFFFFFFFFFFFFFEULL, 0, 0xFFFFFFFFFFFFFFFFULL)); aml_append(method, aml_name_decl("MR64", crs_tmpl)); aml_append(method, aml_create_dword_field(mr64, aml_int(14), "MINL")); aml_append(method, aml_create_dword_field(mr64, aml_int(18), "MINH")); aml_append(method, aml_create_dword_field(mr64, aml_int(38), "LENL")); aml_append(method, aml_create_dword_field(mr64, aml_int(42), "LENH")); aml_append(method, aml_create_dword_field(mr64, aml_int(22), "MAXL")); aml_append(method, aml_create_dword_field(mr64, aml_int(26), "MAXH")); aml_append(method, aml_store(aml_name(MEMORY_SLOT_ADDR_HIGH), minh)); aml_append(method, aml_store(aml_name(MEMORY_SLOT_ADDR_LOW), minl)); aml_append(method, aml_store(aml_name(MEMORY_SLOT_SIZE_HIGH), lenh)); aml_append(method, aml_store(aml_name(MEMORY_SLOT_SIZE_LOW), lenl)); /* 64-bit math: MAX = MIN + LEN - 1 */ aml_append(method, aml_add(minl, lenl, maxl)); aml_append(method, aml_add(minh, lenh, maxh)); ifctx = aml_if(aml_lless(maxl, minl)); { aml_append(ifctx, aml_add(maxh, one, maxh)); } aml_append(method, ifctx); ifctx = aml_if(aml_lless(maxl, one)); { aml_append(ifctx, aml_subtract(maxh, one, maxh)); } aml_append(method, ifctx); aml_append(method, aml_subtract(maxl, one, maxl)); /* return 32-bit _CRS if addr/size is in low mem */ /* TODO: remove it since all hotplugged DIMMs are in high mem */ ifctx = aml_if(aml_equal(maxh, zero)); { crs_tmpl = aml_resource_template(); aml_append(crs_tmpl, aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_CACHEABLE, AML_READ_WRITE, 0, 0x0, 0xFFFFFFFE, 0, 0xFFFFFFFF)); aml_append(ifctx, aml_name_decl("MR32", crs_tmpl)); aml_append(ifctx, aml_create_dword_field(mr32, aml_int(10), "MIN")); aml_append(ifctx, aml_create_dword_field(mr32, aml_int(14), "MAX")); aml_append(ifctx, aml_create_dword_field(mr32, aml_int(22), "LEN")); aml_append(ifctx, aml_store(minl, aml_name("MIN"))); aml_append(ifctx, aml_store(maxl, aml_name("MAX"))); aml_append(ifctx, aml_store(lenl, aml_name("LEN"))); aml_append(ifctx, aml_release(ctrl_lock)); aml_append(ifctx, aml_return(mr32)); } aml_append(method, ifctx); aml_append(method, aml_release(ctrl_lock)); aml_append(method, aml_return(mr64)); } aml_append(mem_ctrl_dev, method); method = aml_method(MEMORY_SLOT_PROXIMITY_METHOD, 1, AML_NOTSERIALIZED); { Aml *proximity = aml_name(MEMORY_SLOT_PROXIMITY); aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); aml_append(method, aml_store(aml_to_integer(slot_arg0), slot_selector)); aml_append(method, aml_store(proximity, ret_val)); aml_append(method, aml_release(ctrl_lock)); aml_append(method, aml_return(ret_val)); } aml_append(mem_ctrl_dev, method); method = aml_method(MEMORY_SLOT_OST_METHOD, 4, AML_NOTSERIALIZED); { Aml *ost_evt = aml_name(MEMORY_SLOT_OST_EVENT); Aml *ost_status = aml_name(MEMORY_SLOT_OST_STATUS); aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); aml_append(method, aml_store(aml_to_integer(slot_arg0), slot_selector)); aml_append(method, aml_store(aml_arg(1), ost_evt)); aml_append(method, aml_store(aml_arg(2), ost_status)); aml_append(method, aml_release(ctrl_lock)); } aml_append(mem_ctrl_dev, method); method = aml_method(MEMORY_SLOT_EJECT_METHOD, 2, AML_NOTSERIALIZED); { Aml *eject = aml_name(MEMORY_SLOT_EJECT); aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); aml_append(method, aml_store(aml_to_integer(slot_arg0), slot_selector)); aml_append(method, aml_store(one, eject)); aml_append(method, aml_release(ctrl_lock)); } aml_append(mem_ctrl_dev, method); } aml_append(pci_scope, mem_ctrl_dev); aml_append(ctx, pci_scope); }