Two more fixes

[pve-qemu-kvm.git] / debian / patches / ahci-add_migration-support.patch

From: 	Jason Baron
Subject: 	[Qemu-devel] [PATCH] ahci: add migration support
Date: 	Thu, 30 Aug 2012 14:00:04 -0400

Add support for ahci migration. This patch builds upon the patches posted
previously by Andreas Faerber:

http://lists.gnu.org/archive/html/qemu-devel/2012-08/msg01538.html

(I hope I am giving Andreas proper credit for his work.)

I've tested these patches by migrating Windows 7 and Fedora 16 guests on
both piix with ahci attached and on q35 (which has a built-in ahci controller).

Signed-off-by: Jason Baron <address@hidden>
---
 hw/ide/ahci.c |   64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 hw/ide/ahci.h |   10 +++++++++
 hw/ide/ich.c  |   11 +++++++--
 3 files changed, 81 insertions(+), 4 deletions(-)

Index: new/hw/ide/ahci.c
===================================================================
--- new.orig/hw/ide/ahci.c	2012-09-24 07:15:00.000000000 +0200
+++ new/hw/ide/ahci.c	2012-09-24 07:15:28.000000000 +0200
@@ -1203,6 +1203,65 @@
     }
 }
 
+static const VMStateDescription vmstate_ahci_device = {
+    .name = "ahci port",
+    .version_id = 1,
+    .fields = (VMStateField []) {
+        VMSTATE_IDE_BUS(port, AHCIDevice),
+        VMSTATE_UINT32(port_state, AHCIDevice),
+        VMSTATE_UINT32(finished, AHCIDevice),
+        VMSTATE_UINT32(port_regs.lst_addr, AHCIDevice),
+        VMSTATE_UINT32(port_regs.lst_addr_hi, AHCIDevice),
+        VMSTATE_UINT32(port_regs.fis_addr, AHCIDevice),
+        VMSTATE_UINT32(port_regs.fis_addr_hi, AHCIDevice),
+        VMSTATE_UINT32(port_regs.irq_stat, AHCIDevice),
+        VMSTATE_UINT32(port_regs.irq_mask, AHCIDevice),
+        VMSTATE_UINT32(port_regs.cmd, AHCIDevice),
+        VMSTATE_UINT32(port_regs.tfdata, AHCIDevice),
+        VMSTATE_UINT32(port_regs.sig, AHCIDevice),
+        VMSTATE_UINT32(port_regs.scr_stat, AHCIDevice),
+        VMSTATE_UINT32(port_regs.scr_ctl, AHCIDevice),
+        VMSTATE_UINT32(port_regs.scr_err, AHCIDevice),
+        VMSTATE_UINT32(port_regs.scr_act, AHCIDevice),
+        VMSTATE_UINT32(port_regs.cmd_issue, AHCIDevice),
+        VMSTATE_END_OF_LIST()
+    },
+};
+
+static int ahci_state_post_load(void *opaque, int version_id)
+{
+    int i;
+    AHCIState *s = opaque;
+
+    for (i = 0; i < s->ports; i++) {
+        AHCIPortRegs *pr = &s->dev[i].port_regs;
+
+        map_page(&s->dev[i].lst,
+                 ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024);
+        map_page(&s->dev[i].res_fis,
+                 ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256);
+    }
+
+    return 0;
+}
+
+const VMStateDescription vmstate_ahci = {
+    .name = "ahci",
+    .version_id = 1,
+    .post_load = ahci_state_post_load,
+    .fields = (VMStateField []) {
+        VMSTATE_STRUCT_VARRAY_POINTER_INT32(dev, AHCIState, ports,
+                                     vmstate_ahci_device, AHCIDevice),
+        VMSTATE_UINT32(control_regs.cap, AHCIState),
+        VMSTATE_UINT32(control_regs.ghc, AHCIState),
+        VMSTATE_UINT32(control_regs.irqstatus, AHCIState),
+        VMSTATE_UINT32(control_regs.impl, AHCIState),
+        VMSTATE_UINT32(control_regs.version, AHCIState),
+        VMSTATE_UINT32(idp_index, AHCIState),
+        VMSTATE_END_OF_LIST()
+    },
+};
+
 typedef struct SysbusAHCIState {
     SysBusDevice busdev;
     AHCIState ahci;
@@ -1211,7 +1270,10 @@
 
 static const VMStateDescription vmstate_sysbus_ahci = {
     .name = "sysbus-ahci",
-    .unmigratable = 1,
+    .fields = (VMStateField []) {
+        VMSTATE_AHCI(ahci, AHCIPCIState),
+        VMSTATE_END_OF_LIST()
+    },
 };
 
 static void sysbus_ahci_reset(DeviceState *dev)
Index: new/hw/ide/ahci.h
===================================================================
--- new.orig/hw/ide/ahci.h	2012-09-24 07:15:00.000000000 +0200
+++ new/hw/ide/ahci.h	2012-09-24 07:15:28.000000000 +0200
@@ -307,6 +307,16 @@
     AHCIState ahci;
 } AHCIPCIState;
 
+extern const VMStateDescription vmstate_ahci;
+
+#define VMSTATE_AHCI(_field, _state) {                               \
+    .name       = (stringify(_field)),                               \
+    .size       = sizeof(AHCIState),                                 \
+    .vmsd       = &vmstate_ahci,                                     \
+    .flags      = VMS_STRUCT,                                        \
+    .offset     = vmstate_offset_value(_state, _field, AHCIState),   \
+}
+
 typedef struct NCQFrame {
     uint8_t fis_type;
     uint8_t c;
Index: new/hw/ide/ich.c
===================================================================
--- new.orig/hw/ide/ich.c	2012-09-24 07:15:00.000000000 +0200
+++ new/hw/ide/ich.c	2012-09-24 07:15:28.000000000 +0200
@@ -79,9 +79,14 @@
 #define ICH9_IDP_INDEX          0x10
 #define ICH9_IDP_INDEX_LOG2     0x04
 
-static const VMStateDescription vmstate_ahci = {
+static const VMStateDescription vmstate_ich9_ahci = {
     .name = "ahci",
-    .unmigratable = 1,
+    .version_id = 1,
+    .fields = (VMStateField []) {
+        VMSTATE_PCI_DEVICE(card, AHCIPCIState),
+        VMSTATE_AHCI(ahci, AHCIPCIState),
+        VMSTATE_END_OF_LIST()
+    },
 };
 
 static void pci_ich9_reset(DeviceState *dev)
@@ -152,7 +157,7 @@
     k->device_id = PCI_DEVICE_ID_INTEL_82801IR;
     k->revision = 0x02;
     k->class_id = PCI_CLASS_STORAGE_SATA;
-    dc->vmsd = &vmstate_ahci;
+    dc->vmsd = &vmstate_ich9_ahci;
     dc->reset = pci_ich9_reset;
 }