[PATCH v4 16/45] Enable BCM2838 PCIE

[Sergey Kambalin]

Signed-off-by: Sergey Kambalin <sergey.kambalin@auriga.com>
---
 hw/arm/bcm2838_pcie.c                |  3 +++
 hw/arm/bcm2838_peripherals.c         | 26 ++++++++++++++++++++++++++
 hw/arm/meson.build                   |  7 ++++---
 hw/arm/raspi4b.c                     |  1 -
 include/hw/arm/bcm2838_peripherals.h |  3 +++
 5 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/hw/arm/bcm2838_pcie.c b/hw/arm/bcm2838_pcie.c
index 75146d6c2e..8e046d0ac7 100644
--- a/hw/arm/bcm2838_pcie.c
+++ b/hw/arm/bcm2838_pcie.c
@@ -239,6 +239,9 @@ static void bcm2838_pcie_root_reg_reset(PCIDevice *dev)
 }
 
 static void bcm2838_pcie_root_realize(PCIDevice *dev, Error **errp) {
+    BCM2838PcieRootClass *brpc = BCM2838_PCIE_ROOT_GET_CLASS(dev);
+
+    brpc->parent_realize(dev, errp);
     bcm2838_pcie_root_reg_reset(dev);
 }
 
diff --git a/hw/arm/bcm2838_peripherals.c b/hw/arm/bcm2838_peripherals.c
index d3b42cf25b..ee06214715 100644
--- a/hw/arm/bcm2838_peripherals.c
+++ b/hw/arm/bcm2838_peripherals.c
@@ -12,6 +12,11 @@
 #include "hw/arm/raspi_platform.h"
 #include "hw/arm/bcm2838_peripherals.h"
 
+#define PCIE_RC_OFFSET          0x1500000
+#define PCIE_MMIO_OFFSET        0xc0000000
+#define PCIE_MMIO_ARM_OFFSET    0x600000000
+#define PCIE_MMIO_SIZE          0x40000000
+
 /* Lower peripheral base address on the VC (GPU) system bus */
 #define BCM2838_VC_PERI_LOW_BASE 0x7c000000
 
@@ -29,6 +34,10 @@ static void bcm2838_peripherals_init(Object *obj)
                        bc->peri_low_size);
     sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_low_mr);
 
+    /* PCIe Host Bridge */
+    object_initialize_child(obj, "pcie-host", &s->pcie_host,
+                            TYPE_BCM2838_PCIE_HOST);
+
     /* Extended Mass Media Controller 2 */
     object_initialize_child(obj, "emmc2", &s->emmc2, TYPE_SYSBUS_SDHCI);
 
@@ -61,6 +70,9 @@ static void bcm2838_peripherals_realize(DeviceState *dev, 
Error **errp)
     MemoryRegion *mphi_mr;
     BCM2838PeripheralState *s = BCM2838_PERIPHERALS(dev);
     BCMSocPeripheralBaseState *s_base = BCM_SOC_PERIPHERALS_BASE(dev);
+    MemoryRegion *regs_mr;
+    MemoryRegion *mmio_mr;
+
     int n;
 
     bcm_soc_peripherals_common_realize(dev, errp);
@@ -172,6 +184,20 @@ static void bcm2838_peripherals_realize(DeviceState *dev, 
Error **errp)
                              BCM2838_MPHI_SIZE);
     memory_region_add_subregion(&s_base->peri_mr, BCM2838_MPHI_OFFSET,
                                 &s->mphi_mr_alias);
+    /* PCIe Root Complex */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->pcie_host), errp)) {
+        return;
+    }
+    /* RC registers region */
+    regs_mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->pcie_host), 0);
+    memory_region_add_subregion(&s->peri_low_mr, PCIE_RC_OFFSET, regs_mr);
+    /* MMIO region */
+    mmio_mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->pcie_host), 1);
+    memory_region_init_alias(&s->pcie_mmio_alias, OBJECT(&s->pcie_host),
+                             "pcie-mmio", mmio_mr, PCIE_MMIO_OFFSET,
+                             PCIE_MMIO_SIZE);
+    memory_region_add_subregion(get_system_memory(), PCIE_MMIO_ARM_OFFSET,
+                                &s->pcie_mmio_alias);
 
     /* GPIO */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) {
diff --git a/hw/arm/meson.build b/hw/arm/meson.build
index b26ed13c6f..69d199b73e 100644
--- a/hw/arm/meson.build
+++ b/hw/arm/meson.build
@@ -41,7 +41,6 @@ arm_ss.add(when: 'CONFIG_ALLWINNER_R40', if_true: 
files('allwinner-r40.c', 'bana
 arm_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2836.c', 'raspi.c'))
 arm_ss.add(when: ['CONFIG_RASPI', 'TARGET_AARCH64'], if_true: files(
   'bcm2838.c',
-  'bcm2838_pcie.c',
   'raspi4b.c'))
 arm_ss.add(when: 'CONFIG_STM32F100_SOC', if_true: files('stm32f100_soc.c'))
 arm_ss.add(when: 'CONFIG_STM32F205_SOC', if_true: files('stm32f205_soc.c'))
@@ -72,8 +71,10 @@ arm_ss.add(when: 'CONFIG_XEN', if_true: files('xen_arm.c'))
 
 system_ss.add(when: 'CONFIG_ARM_SMMUV3', if_true: files('smmu-common.c'))
 system_ss.add(when: 'CONFIG_EXYNOS4', if_true: files('exynos4_boards.c'))
-system_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_peripherals.c'))
-system_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2838_peripherals.c'))
+system_ss.add(when: 'CONFIG_RASPI', if_true: files(
+    'bcm2835_peripherals.c',
+    'bcm2838_peripherals.c',
+    'bcm2838_pcie.c'))
 system_ss.add(when: 'CONFIG_TOSA', if_true: files('tosa.c'))
 
 hw_arch += {'arm': arm_ss}
diff --git a/hw/arm/raspi4b.c b/hw/arm/raspi4b.c
index 10376b62dc..2e8474e1c5 100644
--- a/hw/arm/raspi4b.c
+++ b/hw/arm/raspi4b.c
@@ -67,7 +67,6 @@ static void raspi4_modify_dtb(const struct arm_boot_info 
*info, void *fdt)
 
     /* Temporarily disable following devices until they are implemented*/
     const char *to_be_removed_from_dt_as_wa[] = {
-        "brcm,bcm2711-pcie",
         "brcm,bcm2711-rng200",
         "brcm,bcm2711-thermal",
         "brcm,bcm2711-genet-v5",
diff --git a/include/hw/arm/bcm2838_peripherals.h 
b/include/hw/arm/bcm2838_peripherals.h
index af085934c9..2af96df1c6 100644
--- a/include/hw/arm/bcm2838_peripherals.h
+++ b/include/hw/arm/bcm2838_peripherals.h
@@ -10,6 +10,7 @@
 #define BCM2838_PERIPHERALS_H
 
 #include "hw/arm/bcm2835_peripherals.h"
+#include "hw/arm/bcm2838_pcie.h"
 #include "hw/sd/sdhci.h"
 #include "hw/gpio/bcm2838_gpio.h"
 
@@ -62,8 +63,10 @@ struct BCM2838PeripheralState {
     MemoryRegion peri_low_mr;
     MemoryRegion peri_low_mr_alias;
     MemoryRegion mphi_mr_alias;
+    MemoryRegion pcie_mmio_alias;
 
     SDHCIState emmc2;
+    BCM2838PcieHostState pcie_host;
     BCM2838GpioState gpio;
 
     OrIRQState mmc_irq_orgate;
-- 
2.34.1