[Xen-devel] [PATCH v3 06/20] piix4: Add an i8257 DMA Controller as specified in datasheet

[Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>]

From: Hervé Poussineau <hpoussin@xxxxxxxxxxx>

The i8257 is not a chipset on the Malta board, but is part of
the PIIX4 chipset.
Create the i8257 in the PIIX4 code, remove the one instantiated
in malta board, to not have it twice.

Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Acked-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Hervé Poussineau <hpoussin@xxxxxxxxxxx>
Message-Id: <20171216090228.28505-9-hpoussin@xxxxxxxxxxx>
Reviewed-by: Aleksandar Markovic <amarkovic@xxxxxxxxxxxx>
Reviewed-by: Esteban Bosse <estebanbosse@xxxxxxxxx>
[PMD: rebased, reworded description]
Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
---
v3: Reworded commit description (Li Qiang)
---
 hw/isa/piix4.c       | 4 ++++
 hw/mips/mips_malta.c | 2 --
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/hw/isa/piix4.c b/hw/isa/piix4.c
index fa387919b5..9ebe98bdc3 100644
--- a/hw/isa/piix4.c
+++ b/hw/isa/piix4.c
@@ -29,6 +29,7 @@
 #include "hw/pci/pci.h"
 #include "hw/isa/isa.h"
 #include "hw/sysbus.h"
+#include "hw/dma/i8257.h"
 #include "migration/vmstate.h"
 #include "sysemu/reset.h"
 #include "sysemu/runstate.h"
@@ -167,6 +168,9 @@ static void piix4_realize(PCIDevice *dev, Error **errp)
     /* initialize ISA irqs */
     isa_bus_irqs(isa_bus, s->isa);
 
+    /* DMA */
+    i8257_dma_init(isa_bus, 0);
+
     piix4_dev = dev;
 }
 
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index 5086024821..44e5f8b26b 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -28,7 +28,6 @@
 #include "cpu.h"
 #include "hw/i386/pc.h"
 #include "hw/isa/superio.h"
-#include "hw/dma/i8257.h"
 #include "hw/char/serial.h"
 #include "net/net.h"
 #include "hw/boards.h"
@@ -1430,7 +1429,6 @@ void mips_malta_init(MachineState *machine)
     smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100,
                           isa_get_irq(NULL, 9), NULL, 0, NULL);
     pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
-    i8257_dma_init(isa_bus, 0);
     mc146818_rtc_init(isa_bus, 2000, NULL);
 
     /* generate SPD EEPROM data */
-- 
2.21.0


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