Re: [PATCH v2 1/5] hw/arm/virt: Key enablement of highmem PCIe on highmem_ecam

[Andrew Jones <drjones@redhat.com>]

On Sun, Oct 03, 2021 at 05:46:01PM +0100, Marc Zyngier wrote:
> Currently, the highmem PCIe region is oddly keyed on the highmem
> attribute instead of highmem_ecam. Move the enablement of this PCIe
> region over to highmem_ecam.
> 
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> ---
>  hw/arm/virt-acpi-build.c | 10 ++++------
>  hw/arm/virt.c            |  4 ++--
>  2 files changed, 6 insertions(+), 8 deletions(-)
> 
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 037cc1fd82..d7bef0e627 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -157,10 +157,9 @@ static void acpi_dsdt_add_virtio(Aml *scope,
>  }
>  
>  static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
> -                              uint32_t irq, bool use_highmem, bool highmem_ecam,
> -                              VirtMachineState *vms)
> +                              uint32_t irq, VirtMachineState *vms)
>  {
> -    int ecam_id = VIRT_ECAM_ID(highmem_ecam);
> +    int ecam_id = VIRT_ECAM_ID(vms->highmem_ecam);
>      struct GPEXConfig cfg = {
>          .mmio32 = memmap[VIRT_PCIE_MMIO],
>          .pio    = memmap[VIRT_PCIE_PIO],
> @@ -169,7 +168,7 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
>          .bus    = vms->bus,
>      };
>  
> -    if (use_highmem) {
> +    if (vms->highmem_ecam) {
>          cfg.mmio64 = memmap[VIRT_HIGH_PCIE_MMIO];
>      }
>  
> @@ -712,8 +711,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>      acpi_dsdt_add_fw_cfg(scope, &memmap[VIRT_FW_CFG]);
>      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);
> +    acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE), vms);

While tidying this interface, could also remove the superfluous ().

>      if (vms->acpi_dev) {
>          build_ged_aml(scope, "\\_SB."GED_DEVICE,
>                        HOTPLUG_HANDLER(vms->acpi_dev),
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 7170aaacd5..8021d545c3 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -1362,7 +1362,7 @@ static void create_pcie(VirtMachineState *vms)
>                               mmio_reg, base_mmio, size_mmio);
>      memory_region_add_subregion(get_system_memory(), base_mmio, mmio_alias);
>  
> -    if (vms->highmem) {
> +    if (vms->highmem_ecam) {
>          /* Map high MMIO space */
>          MemoryRegion *high_mmio_alias = g_new0(MemoryRegion, 1);
>  
> @@ -1416,7 +1416,7 @@ static void create_pcie(VirtMachineState *vms)
>      qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
>                                   2, base_ecam, 2, size_ecam);
>  
> -    if (vms->highmem) {
> +    if (vms->highmem_ecam) {
>          qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "ranges",
>                                       1, FDT_PCI_RANGE_IOPORT, 2, 0,
>                                       2, base_pio, 2, size_pio,
> -- 
> 2.30.2
> 


Reviewed-by: Andrew Jones <drjones@redhat.com>

Thanks,
drew