| /* |
| * Memory hotplug AML code of DSDT ACPI table |
| * |
| * Copyright (C) 2015 Red Hat Inc |
| * |
| * Author: Igor Mammedov <imammedo@redhat.com> |
| * |
| * 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); |
| } |
