[PATCH] hw/arm: add PCIe to Freescale i.MX6

[Nikita Ostrenkov <n.ostrenkov@gmail.com>]

Signed-off-by: Nikita Ostrenkov <n.ostrenkov@gmail.com>
---
 hw/arm/Kconfig            |  3 +++
 hw/arm/fsl-imx6.c         | 25 ++++++++++++++++++++++
 include/hw/arm/fsl-imx6.h | 44 ++++++++++++++++++++-------------------
 3 files changed, 51 insertions(+), 21 deletions(-)

diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 660f49db49..575bb68c76 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -530,13 +530,16 @@ config FSL_IMX31
 
 config FSL_IMX6
     bool
+    imply PCI_DEVICES
     imply I2C_DEVICES
     select A9MPCORE
+    select PCI
     select IMX
     select IMX_FEC
     select IMX_I2C
     select IMX_USBPHY
     select WDT_IMX2
+    select PCI_EXPRESS_DESIGNWARE
     select SDHCI
 
 config ASPEED_SOC
diff --git a/hw/arm/fsl-imx6.c b/hw/arm/fsl-imx6.c
index b2153022c0..27702b6d6d 100644
--- a/hw/arm/fsl-imx6.c
+++ b/hw/arm/fsl-imx6.c
@@ -22,6 +22,7 @@
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "hw/arm/fsl-imx6.h"
+#include "hw/misc/unimp.h"
 #include "hw/usb/imx-usb-phy.h"
 #include "hw/boards.h"
 #include "hw/qdev-properties.h"
@@ -102,6 +103,8 @@ static void fsl_imx6_init(Object *obj)
 
 
     object_initialize_child(obj, "eth", &s->eth, TYPE_IMX_ENET);
+
+    object_initialize_child(obj, "pcie", &s->pcie, TYPE_DESIGNWARE_PCIE_HOST);
 }
 
 static void fsl_imx6_realize(DeviceState *dev, Error **errp)
@@ -109,6 +112,7 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
     MachineState *ms = MACHINE(qdev_get_machine());
     FslIMX6State *s = FSL_IMX6(dev);
     uint16_t i;
+    qemu_irq irq;
     unsigned int smp_cpus = ms->smp.cpus;
 
     if (smp_cpus > FSL_IMX6_NUM_CPUS) {
@@ -421,6 +425,27 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
                                             FSL_IMX6_WDOGn_IRQ[i]));
     }
 
+    /*
+     * PCIe
+     */
+    sysbus_realize(SYS_BUS_DEVICE(&s->pcie), &error_abort);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->pcie), 0, FSL_IMX6_PCIe_REG_ADDR);
+
+    irq = qdev_get_gpio_in(DEVICE(&s->a9mpcore), FSL_IMX6_PCIE1_IRQ);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->pcie), 0, irq);
+    irq = qdev_get_gpio_in(DEVICE(&s->a9mpcore), FSL_IMX6_PCIE2_IRQ);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->pcie), 1, irq);
+    irq = qdev_get_gpio_in(DEVICE(&s->a9mpcore), FSL_IMX6_PCIE3_IRQ);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->pcie), 2, irq);
+    irq = qdev_get_gpio_in(DEVICE(&s->a9mpcore), FSL_IMX6_PCIE4_IRQ);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->pcie), 3, irq);
+
+    /*
+     * PCIe PHY
+     */
+    create_unimplemented_device("pcie-phy", FSL_IMX6_PCIe_ADDR,
+                                FSL_IMX6_PCIe_SIZE);
+
     /* ROM memory */
     if (!memory_region_init_rom(&s->rom, OBJECT(dev), "imx6.rom",
                                 FSL_IMX6_ROM_SIZE, errp)) {
diff --git a/include/hw/arm/fsl-imx6.h b/include/hw/arm/fsl-imx6.h
index 519b871014..61c593ffd2 100644
--- a/include/hw/arm/fsl-imx6.h
+++ b/include/hw/arm/fsl-imx6.h
@@ -32,6 +32,7 @@
 #include "hw/net/imx_fec.h"
 #include "hw/usb/chipidea.h"
 #include "hw/usb/imx-usb-phy.h"
+#include "hw/pci-host/designware.h"
 #include "exec/memory.h"
 #include "cpu.h"
 #include "qom/object.h"
@@ -55,27 +56,28 @@ struct FslIMX6State {
     DeviceState parent_obj;
 
     /*< public >*/
-    ARMCPU         cpu[FSL_IMX6_NUM_CPUS];
-    A9MPPrivState  a9mpcore;
-    IMX6CCMState   ccm;
-    IMX6SRCState   src;
-    IMX7SNVSState  snvs;
-    IMXSerialState uart[FSL_IMX6_NUM_UARTS];
-    IMXGPTState    gpt;
-    IMXEPITState   epit[FSL_IMX6_NUM_EPITS];
-    IMXI2CState    i2c[FSL_IMX6_NUM_I2CS];
-    IMXGPIOState   gpio[FSL_IMX6_NUM_GPIOS];
-    SDHCIState     esdhc[FSL_IMX6_NUM_ESDHCS];
-    IMXSPIState    spi[FSL_IMX6_NUM_ECSPIS];
-    IMX2WdtState   wdt[FSL_IMX6_NUM_WDTS];
-    IMXUSBPHYState usbphy[FSL_IMX6_NUM_USB_PHYS];
-    ChipideaState  usb[FSL_IMX6_NUM_USBS];
-    IMXFECState    eth;
-    MemoryRegion   rom;
-    MemoryRegion   caam;
-    MemoryRegion   ocram;
-    MemoryRegion   ocram_alias;
-    uint32_t       phy_num;
+    ARMCPU             cpu[FSL_IMX6_NUM_CPUS];
+    A9MPPrivState      a9mpcore;
+    IMX6CCMState       ccm;
+    IMX6SRCState       src;
+    IMX7SNVSState      snvs;
+    IMXSerialState     uart[FSL_IMX6_NUM_UARTS];
+    IMXGPTState        gpt;
+    IMXEPITState       epit[FSL_IMX6_NUM_EPITS];
+    IMXI2CState        i2c[FSL_IMX6_NUM_I2CS];
+    IMXGPIOState       gpio[FSL_IMX6_NUM_GPIOS];
+    SDHCIState         esdhc[FSL_IMX6_NUM_ESDHCS];
+    IMXSPIState        spi[FSL_IMX6_NUM_ECSPIS];
+    IMX2WdtState       wdt[FSL_IMX6_NUM_WDTS];
+    IMXUSBPHYState     usbphy[FSL_IMX6_NUM_USB_PHYS];
+    ChipideaState      usb[FSL_IMX6_NUM_USBS];
+    IMXFECState        eth;
+    DesignwarePCIEHost pcie;
+    MemoryRegion       rom;
+    MemoryRegion       caam;
+    MemoryRegion       ocram;
+    MemoryRegion       ocram_alias;
+    uint32_t           phy_num;
 };
 
 
-- 
2.34.1