[PATCH 09/14] hw/southbridge/ich9: Add a AHCI function

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

Instantiate TYPE_ICH9_AHCI in TYPE_ICH9_SOUTHBRIDGE.

Since the PC machines can disable SATA (see the
PC_MACHINE_SATA dynamic property), add the 'sata-enabled'
property to disable it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 MAINTAINERS                   |  2 ++
 include/hw/southbridge/ich9.h |  4 ----
 hw/i386/pc_q35.c              | 25 ++++---------------------
 hw/southbridge/ich9.c         | 35 +++++++++++++++++++++++++++++++++++
 hw/i386/Kconfig               |  1 -
 hw/southbridge/Kconfig        |  1 +
 6 files changed, 42 insertions(+), 26 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index d1a2eddd4c..937ebb5c96 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2607,9 +2607,11 @@ M: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
 S: Supported
 F: hw/acpi/ich9*.c
 F: hw/i2c/smbus_ich9.c
+F: hw/ide/ich.c
 F: hw/isa/lpc_ich9.c
 F: hw/southbridge/ich9.c
 F: include/hw/acpi/ich9*.h
+F: include/hw/ide/ahci-pci.h
 F: include/hw/pci-bridge/ich_dmi_pci.h
 F: include/hw/southbridge/ich9.h
 
diff --git a/include/hw/southbridge/ich9.h b/include/hw/southbridge/ich9.h
index b9122d299d..ac7f9f4ff5 100644
--- a/include/hw/southbridge/ich9.h
+++ b/include/hw/southbridge/ich9.h
@@ -166,10 +166,6 @@ struct ICH9LPCState {
 
 #define ICH9_GPIO_GSI "gsi"
 
-/* D31:F2 SATA Controller #1 */
-#define ICH9_SATA1_DEV                          31
-#define ICH9_SATA1_FUNC                         2
-
 /* D31:F0 power management I/O registers
    offset from the address ICH9_LPC_PMBASE */
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 2f15af540f..060358d449 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -61,9 +61,6 @@
 #include "hw/acpi/acpi.h"
 #include "target/i386/cpu.h"
 
-/* ICH9 AHCI has 6 ports */
-#define MAX_SATA_PORTS     6
-
 struct ehci_companions {
     const char *name;
     int func;
@@ -129,7 +126,7 @@ static void pc_q35_init(MachineState *machine)
     PCIDevice *lpc;
     Object *lpc_obj;
     DeviceState *lpc_dev;
-    BusState *idebus[MAX_SATA_PORTS];
+    BusState *idebus[2] = { };
     ISADevice *rtc_state;
     MemoryRegion *system_memory = get_system_memory();
     MemoryRegion *system_io = get_system_io();
@@ -138,7 +135,6 @@ static void pc_q35_init(MachineState *machine)
     ISABus *isa_bus;
     int i;
     ram_addr_t lowmem;
-    DriveInfo *hd[MAX_SATA_PORTS];
     MachineClass *mc = MACHINE_GET_CLASS(machine);
     bool acpi_pcihp;
     bool keep_pci_slot_hpc;
@@ -239,6 +235,7 @@ static void pc_q35_init(MachineState *machine)
     object_property_set_link(OBJECT(ich9), "mch-pcie-bus",
                              OBJECT(host_bus), &error_abort);
     qdev_prop_set_bit(ich9, "d2p-enabled", false);
+    qdev_prop_set_bit(ich9, "sata-enabled", pcms->sata_enabled);
     qdev_realize_and_unref(ich9, NULL, &error_fatal);
 
     /* irq lines */
@@ -302,22 +299,8 @@ static void pc_q35_init(MachineState *machine)
                          0xff0104);
 
     if (pcms->sata_enabled) {
-        PCIDevice *pdev;
-        AHCIPCIState *ich9;
-
-        /* ahci and SATA device, for q35 1 ahci controller is built-in */
-        pdev = pci_create_simple_multifunction(host_bus,
-                                               PCI_DEVFN(ICH9_SATA1_DEV,
-                                                         ICH9_SATA1_FUNC),
-                                               "ich9-ahci");
-        ich9 = ICH9_AHCI(pdev);
-        idebus[0] = qdev_get_child_bus(DEVICE(pdev), "ide.0");
-        idebus[1] = qdev_get_child_bus(DEVICE(pdev), "ide.1");
-        g_assert(MAX_SATA_PORTS == ich9->ahci.ports);
-        ide_drive_get(hd, ich9->ahci.ports);
-        ahci_ide_create_devs(&ich9->ahci, hd);
-    } else {
-        idebus[0] = idebus[1] = NULL;
+        idebus[0] = qdev_get_child_bus(ich9, "ide.0");
+        idebus[1] = qdev_get_child_bus(ich9, "ide.1");
     }
 
     if (machine_usb(machine)) {
diff --git a/hw/southbridge/ich9.c b/hw/southbridge/ich9.c
index 6df47e81fb..233dc1c5d7 100644
--- a/hw/southbridge/ich9.c
+++ b/hw/southbridge/ich9.c
@@ -13,22 +13,30 @@
 #include "hw/southbridge/ich9.h"
 #include "hw/pci/pci.h"
 #include "hw/pci-bridge/ich_dmi_pci.h"
+#include "hw/ide/ahci-pci.h"
+#include "hw/ide.h"
 
 #define ICH9_D2P_DEVFN          PCI_DEVFN(30, 0)
+#define ICH9_SATA1_DEVFN        PCI_DEVFN(31, 2)
+
+#define SATA_PORTS              6
 
 struct ICH9State {
     DeviceState parent_obj;
 
     I82801b11Bridge d2p;
+    AHCIPCIState sata0;
 
     PCIBus *pci_bus;
     bool d2p_enabled;
+    bool sata_enabled;
 };
 
 static Property ich9_props[] = {
     DEFINE_PROP_LINK("mch-pcie-bus", ICH9State, pci_bus,
                      TYPE_PCIE_BUS, PCIBus *),
     DEFINE_PROP_BOOL("d2p-enabled", ICH9State, d2p_enabled, true),
+    DEFINE_PROP_BOOL("sata-enabled", ICH9State, sata_enabled, true),
     DEFINE_PROP_END_OF_LIST(),
 };
 
@@ -48,6 +56,29 @@ static bool ich9_realize_d2p(ICH9State *s, Error **errp)
     return true;
 }
 
+static bool ich9_realize_sata(ICH9State *s, Error **errp)
+{
+    DriveInfo *hd[SATA_PORTS];
+
+    object_initialize_child(OBJECT(s), "sata[0]", &s->sata0, TYPE_ICH9_AHCI);
+    qdev_prop_set_int32(DEVICE(&s->sata0), "addr", ICH9_SATA1_DEVFN);
+    if (!qdev_realize(DEVICE(&s->sata0), BUS(s->pci_bus), errp)) {
+        return false;
+    }
+    for (unsigned i = 0; i < SATA_PORTS; i++) {
+        g_autofree char *portname = g_strdup_printf("ide.%u", i);
+
+        object_property_add_alias(OBJECT(s), portname,
+                                  OBJECT(&s->sata0), portname);
+    }
+
+    g_assert(SATA_PORTS == s->sata0.ahci.ports);
+    ide_drive_get(hd, s->sata0.ahci.ports);
+    ahci_ide_create_devs(&s->sata0.ahci, hd);
+
+    return true;
+}
+
 static void ich9_init(Object *obj)
 {
 }
@@ -64,6 +95,10 @@ static void ich9_realize(DeviceState *dev, Error **errp)
     if (s->d2p_enabled && !ich9_realize_d2p(s, errp)) {
         return;
     }
+
+    if (s->sata_enabled && !ich9_realize_sata(s, errp)) {
+        return;
+    }
 }
 
 static void ich9_class_init(ObjectClass *klass, void *data)
diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
index d21638f4f9..226d7f6916 100644
--- a/hw/i386/Kconfig
+++ b/hw/i386/Kconfig
@@ -101,7 +101,6 @@ config Q35
     select PCI_EXPRESS_Q35
     select ICH9
     select LPC_ICH9
-    select AHCI_ICH9
     select DIMM
     select SMBIOS
     select FW_CFG_DMA
diff --git a/hw/southbridge/Kconfig b/hw/southbridge/Kconfig
index db7259bf6f..f806033d48 100644
--- a/hw/southbridge/Kconfig
+++ b/hw/southbridge/Kconfig
@@ -4,3 +4,4 @@ config ICH9
     bool
     depends on PCI_EXPRESS
     imply I82801B11
+    select AHCI_ICH9
-- 
2.41.0