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hw/acpi/viot: move the individual PCI host bridge entry generation to a new function

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Instead of generating each table entry inline, move the individual PCI host bridge
table entry generation to a separate build_pci_host_range() function.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220525173232.31429-3-mark.cave-ayland@ilande.co.uk>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Mark Cave-Ayland 2022-05-25 18:32:28 +01:00 committed by Michael S. Tsirkin
parent 6164a11104
commit 1b805ab560
1 changed files with 27 additions and 21 deletions
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48
hw/acpi/viot.c
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@ -16,6 +16,31 @@ struct viot_pci_ranges {
uint16_t output_node;
};
static void build_pci_host_range(GArray *table_data, int min_bus, int max_bus,
uint16_t output_node)
{
/* Type */
build_append_int_noprefix(table_data, 1 /* PCI range */, 1);
/* Reserved */
build_append_int_noprefix(table_data, 0, 1);
/* Length */
build_append_int_noprefix(table_data, 24, 2);
/* Endpoint start */
build_append_int_noprefix(table_data, PCI_BUILD_BDF(min_bus, 0), 4);
/* PCI Segment start */
build_append_int_noprefix(table_data, 0, 2);
/* PCI Segment end */
build_append_int_noprefix(table_data, 0, 2);
/* PCI BDF start */
build_append_int_noprefix(table_data, PCI_BUILD_BDF(min_bus, 0), 2);
/* PCI BDF end */
build_append_int_noprefix(table_data, PCI_BUILD_BDF(max_bus, 0xff), 2);
/* Output node */
build_append_int_noprefix(table_data, output_node, 2);
/* Reserved */
build_append_int_noprefix(table_data, 0, 6);
}
/* Build PCI range for a given PCI host bridge */
static int enumerate_pci_host_bridges(Object *obj, void *opaque)
{
@ -30,27 +55,8 @@ static int enumerate_pci_host_bridges(Object *obj, void *opaque)
pci_bus_range(bus, &min_bus, &max_bus);
/* Type */
build_append_int_noprefix(blob, 1 /* PCI range */, 1);
/* Reserved */
build_append_int_noprefix(blob, 0, 1);
/* Length */
build_append_int_noprefix(blob, 24, 2);
/* Endpoint start */
build_append_int_noprefix(blob, PCI_BUILD_BDF(min_bus, 0), 4);
/* PCI Segment start */
build_append_int_noprefix(blob, 0, 2);
/* PCI Segment end */
build_append_int_noprefix(blob, 0, 2);
/* PCI BDF start */
build_append_int_noprefix(blob, PCI_BUILD_BDF(min_bus, 0), 2);
/* PCI BDF end */
build_append_int_noprefix(blob, PCI_BUILD_BDF(max_bus, 0xff), 2);
/* Output node */
build_append_int_noprefix(blob, pci_ranges->output_node, 2);
/* Reserved */
build_append_int_noprefix(blob, 0, 6);
build_pci_host_range(blob, min_bus, max_bus,
pci_ranges->output_node);
pci_ranges->count++;
}
}