diff mbox series

[v6,4/8] acpi: Refactor the source of host bridge and build tables for pxb

Message ID 20200408125816.955-5-miaoyubo@huawei.com (mailing list archive)
State New, archived
Headers show
Series pci_expander_brdige:acpi:Support pxb-pcie for ARM | expand

Commit Message

Yubo Miao April 8, 2020, 12:58 p.m. UTC
From: miaoyubo <miaoyubo@huawei.com>

The resources of pxbs and obtained by crs_build and the resources
used by pxbs would be moved form the resources defined for host-bridge.

The resources for pxb are composed of the bar space of the
pci-bridge/pcie-root-port behined it and the config space of devices
behind it.

Signed-off-by: miaoyubo <miaoyubo@huawei.com>
---
 hw/arm/virt-acpi-build.c | 131 +++++++++++++++++++++++++++++++++------
 1 file changed, 111 insertions(+), 20 deletions(-)

Comments

Michael S. Tsirkin May 4, 2020, 2 p.m. UTC | #1
On Wed, Apr 08, 2020 at 08:58:12PM +0800, Yubo Miao wrote:
> From: miaoyubo <miaoyubo@huawei.com>
> 
> The resources of pxbs and obtained by crs_build and the resources
> used by pxbs would be moved form the resources defined for host-bridge.
> 
> The resources for pxb are composed of the bar space of the
> pci-bridge/pcie-root-port behined it and the config space of devices
> behind it.
> 
> Signed-off-by: miaoyubo <miaoyubo@huawei.com>

A bunch of spelling/syntax mistakes in the log, pls spellcheck.

Pls use the format
 Yubo Miao <miaoyubo@huawei.com>



> ---
>  hw/arm/virt-acpi-build.c | 131 +++++++++++++++++++++++++++++++++------
>  1 file changed, 111 insertions(+), 20 deletions(-)
> 
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index e8ba09855c..7bcd04dfb7 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -49,6 +49,9 @@
>  #include "kvm_arm.h"
>  #include "migration/vmstate.h"
>  
> +#include "hw/arm/virt.h"
> +#include "hw/pci/pci_bus.h"
> +#include "hw/pci/pci_bridge.h"
>  #define ARM_SPI_BASE 32
>  
>  static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus)
> @@ -266,19 +269,81 @@ static void acpi_dsdt_add_pci_osc(Aml *dev, Aml *scope)
>  }
>  
>  static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
> -                              uint32_t irq, bool use_highmem, bool highmem_ecam)
> +                              uint32_t irq, bool use_highmem, bool highmem_ecam,
> +                              VirtMachineState *vms)
>  {
>      int ecam_id = VIRT_ECAM_ID(highmem_ecam);
> -    Aml *method, *crs;
> +    int i;
> +    Aml *method, *crs, *dev;
>      hwaddr base_mmio = memmap[VIRT_PCIE_MMIO].base;
>      hwaddr size_mmio = memmap[VIRT_PCIE_MMIO].size;
>      hwaddr base_pio = memmap[VIRT_PCIE_PIO].base;
>      hwaddr size_pio = memmap[VIRT_PCIE_PIO].size;
>      hwaddr base_ecam = memmap[ecam_id].base;
>      hwaddr size_ecam = memmap[ecam_id].size;
> +    CrsRangeEntry *entry;
> +    CrsRangeSet crs_range_set;
> +
> +    crs_range_set_init(&crs_range_set);
>      int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
> +    PCIHostState *s = OBJECT_CHECK(PCIHostState,
> +                                   object_resolve_path_type("",
> +                                   "pcie-host-bridge", NULL),
> +                                   TYPE_PCI_HOST_BRIDGE);

Not TYPE_PCIE_HOST_BRIDGE? And what if it's ambiguous?


> +
> +    PCIBus *bus = s->bus;
> +    /* start to construct the tables for pxb*/


coding style violation. weird that ehckpatch didn't notice it.

> +    if (bus) {
> +        QLIST_FOREACH(bus, &bus->child, sibling) {
> +            uint8_t bus_num = pci_bus_num(bus);
> +            uint8_t numa_node = pci_bus_numa_node(bus);
> +
> +            if (!pci_bus_is_root(bus)) {
> +                continue;
> +            }
> +            /*
> +             * Coded up the MIN of the busNr defined for pxb-pcie,
> +             * the MIN - 1 would be the MAX bus number for the main
> +             * host bridge.


Couldn't figure out this comment. Pls rephrase in some way so it's
understandable.

> +             */
> +            if (bus_num < nr_pcie_buses) {
> +                nr_pcie_buses = bus_num;
> +            }
> +
> +            dev = aml_device("PC%.02X", bus_num);
> +            aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
> +            aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
> +            aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> +            aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
> +            aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
> +            aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num)));
> +            aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
> +            aml_append(dev, aml_name_decl("_STR", aml_unicode("pxb Device")));
> +            if (numa_node != NUMA_NODE_UNASSIGNED) {
> +                method = aml_method("_PXM", 0, AML_NOTSERIALIZED);
> +                aml_append(method, aml_return(aml_int(numa_node)));
> +                aml_append(dev, method);
> +            }
> +
> +            acpi_dsdt_add_pci_route_table(dev, scope, irq);
> +
> +            /*
> +             * Resources deined for PXBs are composed by the folling parts:
> +             * 1. The resources the pci-brige/pcie-root-port need.
> +             * 2. The resources the devices behind pxb need.
> +             */


syntax/grammar errors here too.

> +            crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set);
> +            aml_append(dev, aml_name_decl("_CRS", crs));
> +
> +            acpi_dsdt_add_pci_osc(dev, scope);
> +
> +            aml_append(scope, dev);
> +
> +        }
> +    }
>  
> -    Aml *dev = aml_device("%s", "PCI0");
> +    /* start to construct the tables for main host bridge */

tables for the main.



> +    dev = aml_device("%s", "PCI0");


Make dev above local in scope, then this can stay unchanged.

>      aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
>      aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
>      aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
> @@ -299,25 +364,51 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
>          aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
>                              0x0000, 0x0000, nr_pcie_buses - 1, 0x0000,
>                              nr_pcie_buses));
> -    aml_append(rbuf,
> -        aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
> -                         AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, base_mmio,
> -                         base_mmio + size_mmio - 1, 0x0000, size_mmio));
> -    aml_append(rbuf,
> -        aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
> -                     AML_ENTIRE_RANGE, 0x0000, 0x0000, size_pio - 1, base_pio,
> -                     size_pio));
> +
> +    /*
> +     * Remove the resources used by PXBs.
> +     */
> +    crs_replace_with_free_ranges(crs_range_set.mem_ranges,
> +                                 base_mmio,
> +                                 base_mmio + size_mmio - 1);
> +    for (i = 0; i < crs_range_set.mem_ranges->len; i++) {
> +        entry = g_ptr_array_index(crs_range_set.mem_ranges, i);
> +        aml_append(rbuf,
> +            aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
> +                             AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
> +                             entry->base, entry->limit,
> +                             0x0000, entry->limit - entry->base + 1));
> +    }
> +
> +    crs_replace_with_free_ranges(crs_range_set.io_ranges,
> +                                 0x0000,
> +                                 size_pio - 1);
> +    for (i = 0; i < crs_range_set.io_ranges->len; i++) {
> +        entry = g_ptr_array_index(crs_range_set.io_ranges, i);
> +        aml_append(rbuf,
> +            aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
> +                         AML_ENTIRE_RANGE, 0x0000, entry->base,
> +                         entry->limit, base_pio,
> +                         entry->limit - entry->base + 1));
> +    }
> +
>  
>      if (use_highmem) {
>          hwaddr base_mmio_high = memmap[VIRT_HIGH_PCIE_MMIO].base;
>          hwaddr size_mmio_high = memmap[VIRT_HIGH_PCIE_MMIO].size;
>  
> -        aml_append(rbuf,
> -            aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
> -                             AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
> -                             base_mmio_high,
> -                             base_mmio_high + size_mmio_high - 1, 0x0000,
> -                             size_mmio_high));
> +        crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges,
> +                                     base_mmio_high,
> +                                     base_mmio_high + size_mmio_high - 1);
> +        for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) {
> +            entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i);
> +            aml_append(rbuf,
> +                aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
> +                                 AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
> +                                 entry->base,
> +                                 entry->limit, 0x0000,
> +                                 entry->limit - entry->base + 1));
> +        }
>      }
>  
>      aml_append(method, aml_return(rbuf));
> @@ -335,6 +426,8 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
>      aml_append(dev_res0, aml_name_decl("_CRS", crs));
>      aml_append(dev, dev_res0);
>      aml_append(scope, dev);
> +
> +    crs_range_set_free(&crs_range_set);
>  }
>  
>  static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
> @@ -746,7 +839,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>      acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO],
>                      (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS);
>      acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE),
> -                      vms->highmem, vms->highmem_ecam);
> +                      vms->highmem, vms->highmem_ecam, vms);
>      if (vms->acpi_dev) {
>          build_ged_aml(scope, "\\_SB."GED_DEVICE,
>                        HOTPLUG_HANDLER(vms->acpi_dev),
> @@ -798,7 +891,6 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
>      unsigned dsdt, xsdt;
>      GArray *tables_blob = tables->table_data;
>      MachineState *ms = MACHINE(vms);
> -
>      table_offsets = g_array_new(false, true /* clear */,
>                                          sizeof(uint32_t));
>

this empty line didn't hurt
  
> @@ -952,7 +1044,6 @@ void virt_acpi_setup(VirtMachineState *vms)
>      build_state->rsdp_mr = acpi_add_rom_blob(virt_acpi_build_update,
>                                               build_state, tables.rsdp,
>                                               ACPI_BUILD_RSDP_FILE, 0);
> -
>      qemu_register_reset(virt_acpi_build_reset, build_state);
>      virt_acpi_build_reset(build_state);
>      vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);


this line didn't hurt either.

> -- 
> 2.19.1
>
Yubo Miao May 8, 2020, 1:12 p.m. UTC | #2
Thanks so much for such a careful review!!

> -----Original Message-----
> From: Michael S. Tsirkin [mailto:mst@redhat.com]
> Sent: Monday, May 4, 2020 10:01 PM
> To: miaoyubo <miaoyubo@huawei.com>
> Cc: peter.maydell@linaro.org; shannon.zhaosl@gmail.com;
> lersek@redhat.com; imammedo@redhat.com; qemu-devel@nongnu.org;
> berrange@redhat.com; Xiexiangyou <xiexiangyou@huawei.com>
> Subject: Re: [PATCH v6 4/8] acpi: Refactor the source of host bridge and build
> tables for pxb
> 
> On Wed, Apr 08, 2020 at 08:58:12PM +0800, Yubo Miao wrote:
> > From: miaoyubo <miaoyubo@huawei.com>
> >
> > The resources of pxbs and obtained by crs_build and the resources used
> > by pxbs would be moved form the resources defined for host-bridge.
> >
> > The resources for pxb are composed of the bar space of the
> > pci-bridge/pcie-root-port behined it and the config space of devices
> > behind it.
> >
> > Signed-off-by: miaoyubo <miaoyubo@huawei.com>
> 
> A bunch of spelling/syntax mistakes in the log, pls spellcheck.
> 
> Pls use the format
>  Yubo Miao <miaoyubo@huawei.com>
> 
> 
> 

Thanks for pointing out the mistakes!

> > ---
> >  hw/arm/virt-acpi-build.c | 131
> > +++++++++++++++++++++++++++++++++------
> >  1 file changed, 111 insertions(+), 20 deletions(-)
> >
> > diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index
> > e8ba09855c..7bcd04dfb7 100644
> > --- a/hw/arm/virt-acpi-build.c
> > +++ b/hw/arm/virt-acpi-build.c
> > @@ -49,6 +49,9 @@
> >  #include "kvm_arm.h"
> >  #include "migration/vmstate.h"
> >
> > +#include "hw/arm/virt.h"
> > +#include "hw/pci/pci_bus.h"
> > +#include "hw/pci/pci_bridge.h"
> >  #define ARM_SPI_BASE 32
> >
> >  static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus) @@ -266,19
> > +269,81 @@ static void acpi_dsdt_add_pci_osc(Aml *dev, Aml *scope)  }
> >
> >  static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry
> *memmap,
> > -                              uint32_t irq, bool use_highmem, bool highmem_ecam)
> > +                              uint32_t irq, bool use_highmem, bool highmem_ecam,
> > +                              VirtMachineState *vms)
> >  {
> >      int ecam_id = VIRT_ECAM_ID(highmem_ecam);
> > -    Aml *method, *crs;
> > +    int i;
> > +    Aml *method, *crs, *dev;
> >      hwaddr base_mmio = memmap[VIRT_PCIE_MMIO].base;
> >      hwaddr size_mmio = memmap[VIRT_PCIE_MMIO].size;
> >      hwaddr base_pio = memmap[VIRT_PCIE_PIO].base;
> >      hwaddr size_pio = memmap[VIRT_PCIE_PIO].size;
> >      hwaddr base_ecam = memmap[ecam_id].base;
> >      hwaddr size_ecam = memmap[ecam_id].size;
> > +    CrsRangeEntry *entry;
> > +    CrsRangeSet crs_range_set;
> > +
> > +    crs_range_set_init(&crs_range_set);
> >      int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
> > +    PCIHostState *s = OBJECT_CHECK(PCIHostState,
> > +                                   object_resolve_path_type("",
> > +                                   "pcie-host-bridge", NULL),
> > +                                   TYPE_PCI_HOST_BRIDGE);
> 
> Not TYPE_PCIE_HOST_BRIDGE? And what if it's ambiguous?
> 
> 

Yes, TYPE_PCI_HOST_BRIDGE is ambiguous, I would fix it.  

> > +
> > +    PCIBus *bus = s->bus;
> > +    /* start to construct the tables for pxb*/
> 
> 
> coding style violation. weird that ehckpatch didn't notice it.
> 

Thanks for such a careful review!

> > +    if (bus) {
> > +        QLIST_FOREACH(bus, &bus->child, sibling) {
> > +            uint8_t bus_num = pci_bus_num(bus);
> > +            uint8_t numa_node = pci_bus_numa_node(bus);
> > +
> > +            if (!pci_bus_is_root(bus)) {
> > +                continue;
> > +            }
> > +            /*
> > +             * Coded up the MIN of the busNr defined for pxb-pcie,
> > +             * the MIN - 1 would be the MAX bus number for the main
> > +             * host bridge.
> 
> 
> Couldn't figure out this comment. Pls rephrase in some way so it's
> understandable.
> 

How about 
/* 0 - (nr_pcie_buses - 1) is the bus range for the main
  * host-bridge and it equals the MIN of the
  * busNr defined for pxb-pcie*/

> > +             */
> > +            if (bus_num < nr_pcie_buses) {
> > +                nr_pcie_buses = bus_num;
> > +            }
> > +
> > +            }
> > +
> > +            acpi_dsdt_add_pci_route_table(dev, scope, irq);
> > +
> > +            /*
> > +             * Resources deined for PXBs are composed by the folling parts:
> > +             * 1. The resources the pci-brige/pcie-root-port need.
> > +             * 2. The resources the devices behind pxb need.
> > +             */
> 
> 
> syntax/grammar errors here too.
> 

Sorry for the syntax error!

> > +            crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent),
> &crs_range_set);
> > +            aml_append(dev, aml_name_decl("_CRS", crs));
> > +
> > +            acpi_dsdt_add_pci_osc(dev, scope);
> > +
> > +            aml_append(scope, dev);
> > +
> > +        }
> > +    }
> >
> > -    Aml *dev = aml_device("%s", "PCI0");
> > +    /* start to construct the tables for main host bridge */
> 
> tables for the main.
> 
>
 
Yes, tables for the main is better.

> 
> > +    dev = aml_device("%s", "PCI0");
> 
> 
> Make dev above local in scope, then this can stay unchanged.
> 

Sure.

> >      aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
> >      aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
> >      aml_append(dev, aml_name_decl("_SEG", aml_int(0))); @@ -299,25
> > +364,51 @@ static void acpi_dsdt_add_pci(Aml *scope, const
> MemMapEntry *memmap,
> >          aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED,
> AML_POS_DECODE,
> >                              0x0000, 0x0000, nr_pcie_buses - 1, 0x0000,
> >                              nr_pcie_buses));
> > -    aml_append(rbuf,
> > -        aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED,
> AML_MAX_FIXED,
> >      unsigned dsdt, xsdt;
> >      GArray *tables_blob = tables->table_data;
> >      MachineState *ms = MACHINE(vms);
> > -
> >      table_offsets = g_array_new(false, true /* clear */,
> >                                          sizeof(uint32_t));
> >
> 
> this empty line didn't hurt
> 

I would keep it.

> > @@ -952,7 +1044,6 @@ void virt_acpi_setup(VirtMachineState *vms)
> >      build_state->rsdp_mr = acpi_add_rom_blob(virt_acpi_build_update,
> >                                               build_state, tables.rsdp,
> >                                               ACPI_BUILD_RSDP_FILE,
> > 0);
> > -
> >      qemu_register_reset(virt_acpi_build_reset, build_state);
> >      virt_acpi_build_reset(build_state);
> >      vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);
> 
> 
> this line didn't hurt either.
> 

I would keep it

> > --
> > 2.19.1
> >

Regards,
Miao
diff mbox series

Patch

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index e8ba09855c..7bcd04dfb7 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -49,6 +49,9 @@ 
 #include "kvm_arm.h"
 #include "migration/vmstate.h"
 
+#include "hw/arm/virt.h"
+#include "hw/pci/pci_bus.h"
+#include "hw/pci/pci_bridge.h"
 #define ARM_SPI_BASE 32
 
 static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus)
@@ -266,19 +269,81 @@  static void acpi_dsdt_add_pci_osc(Aml *dev, Aml *scope)
 }
 
 static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
-                              uint32_t irq, bool use_highmem, bool highmem_ecam)
+                              uint32_t irq, bool use_highmem, bool highmem_ecam,
+                              VirtMachineState *vms)
 {
     int ecam_id = VIRT_ECAM_ID(highmem_ecam);
-    Aml *method, *crs;
+    int i;
+    Aml *method, *crs, *dev;
     hwaddr base_mmio = memmap[VIRT_PCIE_MMIO].base;
     hwaddr size_mmio = memmap[VIRT_PCIE_MMIO].size;
     hwaddr base_pio = memmap[VIRT_PCIE_PIO].base;
     hwaddr size_pio = memmap[VIRT_PCIE_PIO].size;
     hwaddr base_ecam = memmap[ecam_id].base;
     hwaddr size_ecam = memmap[ecam_id].size;
+    CrsRangeEntry *entry;
+    CrsRangeSet crs_range_set;
+
+    crs_range_set_init(&crs_range_set);
     int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
+    PCIHostState *s = OBJECT_CHECK(PCIHostState,
+                                   object_resolve_path_type("",
+                                   "pcie-host-bridge", NULL),
+                                   TYPE_PCI_HOST_BRIDGE);
+
+    PCIBus *bus = s->bus;
+    /* start to construct the tables for pxb*/
+    if (bus) {
+        QLIST_FOREACH(bus, &bus->child, sibling) {
+            uint8_t bus_num = pci_bus_num(bus);
+            uint8_t numa_node = pci_bus_numa_node(bus);
+
+            if (!pci_bus_is_root(bus)) {
+                continue;
+            }
+            /*
+             * Coded up the MIN of the busNr defined for pxb-pcie,
+             * the MIN - 1 would be the MAX bus number for the main
+             * host bridge.
+             */
+            if (bus_num < nr_pcie_buses) {
+                nr_pcie_buses = bus_num;
+            }
+
+            dev = aml_device("PC%.02X", bus_num);
+            aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
+            aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
+            aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
+            aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
+            aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
+            aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num)));
+            aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
+            aml_append(dev, aml_name_decl("_STR", aml_unicode("pxb Device")));
+            if (numa_node != NUMA_NODE_UNASSIGNED) {
+                method = aml_method("_PXM", 0, AML_NOTSERIALIZED);
+                aml_append(method, aml_return(aml_int(numa_node)));
+                aml_append(dev, method);
+            }
+
+            acpi_dsdt_add_pci_route_table(dev, scope, irq);
+
+            /*
+             * Resources deined for PXBs are composed by the folling parts:
+             * 1. The resources the pci-brige/pcie-root-port need.
+             * 2. The resources the devices behind pxb need.
+             */
+            crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set);
+            aml_append(dev, aml_name_decl("_CRS", crs));
+
+            acpi_dsdt_add_pci_osc(dev, scope);
+
+            aml_append(scope, dev);
+
+        }
+    }
 
-    Aml *dev = aml_device("%s", "PCI0");
+    /* start to construct the tables for main host bridge */
+    dev = aml_device("%s", "PCI0");
     aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
     aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
     aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
@@ -299,25 +364,51 @@  static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
         aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
                             0x0000, 0x0000, nr_pcie_buses - 1, 0x0000,
                             nr_pcie_buses));
-    aml_append(rbuf,
-        aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
-                         AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, base_mmio,
-                         base_mmio + size_mmio - 1, 0x0000, size_mmio));
-    aml_append(rbuf,
-        aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
-                     AML_ENTIRE_RANGE, 0x0000, 0x0000, size_pio - 1, base_pio,
-                     size_pio));
+
+    /*
+     * Remove the resources used by PXBs.
+     */
+    crs_replace_with_free_ranges(crs_range_set.mem_ranges,
+                                 base_mmio,
+                                 base_mmio + size_mmio - 1);
+    for (i = 0; i < crs_range_set.mem_ranges->len; i++) {
+        entry = g_ptr_array_index(crs_range_set.mem_ranges, i);
+        aml_append(rbuf,
+            aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
+                             AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
+                             entry->base, entry->limit,
+                             0x0000, entry->limit - entry->base + 1));
+    }
+
+    crs_replace_with_free_ranges(crs_range_set.io_ranges,
+                                 0x0000,
+                                 size_pio - 1);
+    for (i = 0; i < crs_range_set.io_ranges->len; i++) {
+        entry = g_ptr_array_index(crs_range_set.io_ranges, i);
+        aml_append(rbuf,
+            aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
+                         AML_ENTIRE_RANGE, 0x0000, entry->base,
+                         entry->limit, base_pio,
+                         entry->limit - entry->base + 1));
+    }
+
 
     if (use_highmem) {
         hwaddr base_mmio_high = memmap[VIRT_HIGH_PCIE_MMIO].base;
         hwaddr size_mmio_high = memmap[VIRT_HIGH_PCIE_MMIO].size;
 
-        aml_append(rbuf,
-            aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
-                             AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
-                             base_mmio_high,
-                             base_mmio_high + size_mmio_high - 1, 0x0000,
-                             size_mmio_high));
+        crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges,
+                                     base_mmio_high,
+                                     base_mmio_high + size_mmio_high - 1);
+        for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) {
+            entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i);
+            aml_append(rbuf,
+                aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
+                                 AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
+                                 entry->base,
+                                 entry->limit, 0x0000,
+                                 entry->limit - entry->base + 1));
+        }
     }
 
     aml_append(method, aml_return(rbuf));
@@ -335,6 +426,8 @@  static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
     aml_append(dev_res0, aml_name_decl("_CRS", crs));
     aml_append(dev, dev_res0);
     aml_append(scope, dev);
+
+    crs_range_set_free(&crs_range_set);
 }
 
 static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
@@ -746,7 +839,7 @@  build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
     acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO],
                     (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS);
     acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE),
-                      vms->highmem, vms->highmem_ecam);
+                      vms->highmem, vms->highmem_ecam, vms);
     if (vms->acpi_dev) {
         build_ged_aml(scope, "\\_SB."GED_DEVICE,
                       HOTPLUG_HANDLER(vms->acpi_dev),
@@ -798,7 +891,6 @@  void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
     unsigned dsdt, xsdt;
     GArray *tables_blob = tables->table_data;
     MachineState *ms = MACHINE(vms);
-
     table_offsets = g_array_new(false, true /* clear */,
                                         sizeof(uint32_t));
 
@@ -952,7 +1044,6 @@  void virt_acpi_setup(VirtMachineState *vms)
     build_state->rsdp_mr = acpi_add_rom_blob(virt_acpi_build_update,
                                              build_state, tables.rsdp,
                                              ACPI_BUILD_RSDP_FILE, 0);
-
     qemu_register_reset(virt_acpi_build_reset, build_state);
     virt_acpi_build_reset(build_state);
     vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);