--- /dev/null
+/*
+ * 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);
+}
Code Review / kvmfornfv.git / blobdiff