[PATCH v3 0/2] Fix via-ide for fuloong2e

[PATCH v3 0/2] Fix via-ide for fuloong2e

[BALATON Zoltan via]

v3 with review comments from Mark addressed

BALATON Zoltan (1):
  ide: Make room for flags in PCIIDEState and add one for legacy mode

Guenter Roeck (1):
  via-ide: Fix fuloong2e support

 hw/ide/cmd646.c      |  6 +++---
 hw/ide/via.c         | 19 +++++++++++++++++--
 hw/mips/fuloong2e.c  |  4 +++-
 hw/sparc64/sun4u.c   |  2 +-
 include/hw/ide/pci.h |  7 ++++++-
 5 files changed, 30 insertions(+), 8 deletions(-)

-- 
2.21.3

[PATCH v3 1/2] ide: Make room for flags in PCIIDEState and add one for legacy mode

[BALATON Zoltan via]

We'll need a flag for implementing some device specific behaviour in
via-ide but we already have a currently CMD646 specific field that can
be repurposed for this and leave room for further flags if needed in
the future. This patch changes the "secondary" field to "flags" and
change CMD646 and its users accordingly and define a new flag for
forcing legacy mode that will be used by via-ide for now.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
---
v3: Convert // comment in context
v2: Fixed typo in commit message

 hw/ide/cmd646.c      | 6 +++---
 hw/sparc64/sun4u.c   | 2 +-
 include/hw/ide/pci.h | 7 ++++++-
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/hw/ide/cmd646.c b/hw/ide/cmd646.c
index c254631485..cfea7fca06 100644
--- a/hw/ide/cmd646.c
+++ b/hw/ide/cmd646.c
@@ -255,8 +255,8 @@ static void pci_cmd646_ide_realize(PCIDevice *dev, Error **errp)
 
     pci_conf[PCI_CLASS_PROG] = 0x8f;
 
-    pci_conf[CNTRL] = CNTRL_EN_CH0; // enable IDE0
-    if (d->secondary) {
+    pci_conf[CNTRL] = CNTRL_EN_CH0; /* enable IDE0 */
+    if (d->flags & BIT(PCI_IDE_SECONDARY)) {
         /* XXX: if not enabled, really disable the seconday IDE controller */
         pci_conf[CNTRL] |= CNTRL_EN_CH1; /* enable IDE1 */
     }
@@ -314,7 +314,7 @@ static void pci_cmd646_ide_exitfn(PCIDevice *dev)
 }
 
 static Property cmd646_ide_properties[] = {
-    DEFINE_PROP_UINT32("secondary", PCIIDEState, secondary, 0),
+    DEFINE_PROP_BIT("secondary", PCIIDEState, flags, PCI_IDE_SECONDARY, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 0fa13a7330..c46baa9f48 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -674,7 +674,7 @@ static void sun4uv_init(MemoryRegion *address_space_mem,
     }
 
     pci_dev = pci_new(PCI_DEVFN(3, 0), "cmd646-ide");
-    qdev_prop_set_uint32(&pci_dev->qdev, "secondary", 1);
+    qdev_prop_set_bit(&pci_dev->qdev, "secondary", true);
     pci_realize_and_unref(pci_dev, pci_busA, &error_fatal);
     pci_ide_create_devs(pci_dev);
 
diff --git a/include/hw/ide/pci.h b/include/hw/ide/pci.h
index d8384e1c42..75d1a32f6d 100644
--- a/include/hw/ide/pci.h
+++ b/include/hw/ide/pci.h
@@ -42,6 +42,11 @@ typedef struct BMDMAState {
 #define TYPE_PCI_IDE "pci-ide"
 OBJECT_DECLARE_SIMPLE_TYPE(PCIIDEState, PCI_IDE)
 
+enum {
+    PCI_IDE_SECONDARY, /* used only for cmd646 */
+    PCI_IDE_LEGACY_MODE
+};
+
 struct PCIIDEState {
     /*< private >*/
     PCIDevice parent_obj;
@@ -49,7 +54,7 @@ struct PCIIDEState {
 
     IDEBus bus[2];
     BMDMAState bmdma[2];
-    uint32_t secondary; /* used only for cmd646 */
+    uint32_t flags;
     MemoryRegion bmdma_bar;
     MemoryRegion cmd_bar[2];
     MemoryRegion data_bar[2];
-- 
2.21.3

[PATCH v3 2/2] via-ide: Fix fuloong2e support

[BALATON Zoltan via]

From: Guenter Roeck <linux@roeck-us.net>

The IDE legacy mode emulation has been removed in commit 4ea98d317eb
("ide/via: Implement and use native PCI IDE mode") but some Linux
kernels (probably including def_config) require legacy mode on the
Fuloong2e so only emulating native mode did not turn out feasible.
Add property to via-ide model to make the mode configurable, and set
legacy mode for Fuloong2e.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[balaton: Use bit in flags for property, add comment for missing BAR4]
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
v3: Use dash in property name
v2: Reworded commit message

 hw/ide/via.c        | 19 +++++++++++++++++--
 hw/mips/fuloong2e.c |  4 +++-
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/hw/ide/via.c b/hw/ide/via.c
index be09912b33..2d935b910f 100644
--- a/hw/ide/via.c
+++ b/hw/ide/via.c
@@ -26,6 +26,7 @@
 
 #include "qemu/osdep.h"
 #include "hw/pci/pci.h"
+#include "hw/qdev-properties.h"
 #include "migration/vmstate.h"
 #include "qemu/module.h"
 #include "sysemu/dma.h"
@@ -185,12 +186,19 @@ static void via_ide_realize(PCIDevice *dev, Error **errp)
                           &d->bus[1], "via-ide1-cmd", 4);
     pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[1]);
 
-    bmdma_setup_bar(d);
-    pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
+    if (!(d->flags & BIT(PCI_IDE_LEGACY_MODE))) {
+        /* Missing BAR4 will make Linux driver fall back to legacy PIO mode */
+        bmdma_setup_bar(d);
+        pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
+    }
 
     qdev_init_gpio_in(ds, via_ide_set_irq, 2);
     for (i = 0; i < 2; i++) {
         ide_bus_new(&d->bus[i], sizeof(d->bus[i]), ds, i, 2);
+        if (d->flags & BIT(PCI_IDE_LEGACY_MODE)) {
+            ide_init_ioport(&d->bus[i], NULL, i ? 0x170 : 0x1f0,
+                            i ? 0x376 : 0x3f6);
+        }
         ide_init2(&d->bus[i], qdev_get_gpio_in(ds, i));
 
         bmdma_init(&d->bus[i], &d->bmdma[i], d);
@@ -210,6 +218,12 @@ static void via_ide_exitfn(PCIDevice *dev)
     }
 }
 
+static Property via_ide_properties[] = {
+    DEFINE_PROP_BIT("legacy-mode", PCIIDEState, flags, PCI_IDE_LEGACY_MODE,
+                    false),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void via_ide_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -223,6 +237,7 @@ static void via_ide_class_init(ObjectClass *klass, void *data)
     k->device_id = PCI_DEVICE_ID_VIA_IDE;
     k->revision = 0x06;
     k->class_id = PCI_CLASS_STORAGE_IDE;
+    device_class_set_props(dc, via_ide_properties);
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 }
 
diff --git a/hw/mips/fuloong2e.c b/hw/mips/fuloong2e.c
index 45c596f4fe..d334fde389 100644
--- a/hw/mips/fuloong2e.c
+++ b/hw/mips/fuloong2e.c
@@ -253,7 +253,9 @@ static void vt82c686b_southbridge_init(PCIBus *pci_bus, int slot, qemu_irq intc,
     /* Super I/O */
     isa_create_simple(isa_bus, TYPE_VT82C686B_SUPERIO);
 
-    dev = pci_create_simple(pci_bus, PCI_DEVFN(slot, 1), "via-ide");
+    dev = pci_new(PCI_DEVFN(slot, 1), "via-ide");
+    qdev_prop_set_bit(&dev->qdev, "legacy-mode", true);
+    pci_realize_and_unref(dev, pci_bus, &error_fatal);
     pci_ide_create_devs(dev);
 
     pci_create_simple(pci_bus, PCI_DEVFN(slot, 2), "vt82c686b-usb-uhci");
-- 
2.21.3