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Re: [PATCH v6 4/8] acpi: Refactor the source of host bridge and build ta
From: |
Michael S. Tsirkin |
Subject: |
Re: [PATCH v6 4/8] acpi: Refactor the source of host bridge and build tables for pxb |
Date: |
Mon, 4 May 2020 10:00:35 -0400 |
On Wed, Apr 08, 2020 at 08:58:12PM +0800, Yubo Miao wrote:
> From: miaoyubo <address@hidden>
>
> 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 <address@hidden>
A bunch of spelling/syntax mistakes in the log, pls spellcheck.
Pls use the format
Yubo Miao <address@hidden>
> ---
> 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
>
- Re: [PATCH v6 4/8] acpi: Refactor the source of host bridge and build tables for pxb,
Michael S. Tsirkin <=