From a86d86ac0ae39b7e8fcce08fffd2e0ab5aa287df Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 24 Sep 2021 08:27:58 -0400 Subject: acpi: arm/virt: build_spcr: use acpi_table_begin()/acpi_table_end() instead of build_header() it replaces error-prone pointer arithmetic for build_header() API, with 2 calls to start and finish table creation, which hides offsets magic from API user. while at it, replace packed structure with endian agnostic build_append_FOO() API. PS: Spec is Microsoft hosted, however 1.02 is no where to be found (MS lists only the current revision) and the current revision is 1.07, so bring comments in line with 1.07 as this is the only available spec. There is no content change between originally implemented 1.02 (using QEMU code as reference) and 1.07. The only change is renaming 'Reserved2' field to 'Language', with the same 0 value. Signed-off-by: Igor Mammedov Reviewed-by: Eric Auger Message-Id: <20210924122802.1455362-32-imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/arm/virt-acpi-build.c | 68 +++++++++++++++++++++++++++------------------ include/hw/acpi/acpi-defs.h | 32 --------------------- 2 files changed, 41 insertions(+), 59 deletions(-) diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 7b8706b..7b79fae 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -453,39 +453,53 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) g_array_free(its_idmaps, true); } +/* + * Serial Port Console Redirection Table (SPCR) + * Rev: 1.07 + */ static void build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { - AcpiSerialPortConsoleRedirection *spcr; - const MemMapEntry *uart_memmap = &vms->memmap[VIRT_UART]; - int irq = vms->irqmap[VIRT_UART] + ARM_SPI_BASE; - int spcr_start = table_data->len; - - spcr = acpi_data_push(table_data, sizeof(*spcr)); - - spcr->interface_type = 0x3; /* ARM PL011 UART */ - - spcr->base_address.space_id = AML_AS_SYSTEM_MEMORY; - spcr->base_address.bit_width = 8; - spcr->base_address.bit_offset = 0; - spcr->base_address.access_width = 1; - spcr->base_address.address = cpu_to_le64(uart_memmap->base); - - spcr->interrupt_types = (1 << 3); /* Bit[3] ARMH GIC interrupt */ - spcr->gsi = cpu_to_le32(irq); /* Global System Interrupt */ + AcpiTable table = { .sig = "SPCR", .rev = 2, .oem_id = vms->oem_id, + .oem_table_id = vms->oem_table_id }; - spcr->baud = 3; /* Baud Rate: 3 = 9600 */ - spcr->parity = 0; /* No Parity */ - spcr->stopbits = 1; /* 1 Stop bit */ - spcr->flowctrl = (1 << 1); /* Bit[1] = RTS/CTS hardware flow control */ - spcr->term_type = 0; /* Terminal Type: 0 = VT100 */ + acpi_table_begin(&table, table_data); - spcr->pci_device_id = 0xffff; /* PCI Device ID: not a PCI device */ - spcr->pci_vendor_id = 0xffff; /* PCI Vendor ID: not a PCI device */ + /* Interface Type */ + build_append_int_noprefix(table_data, 3, 1); /* ARM PL011 UART */ + build_append_int_noprefix(table_data, 0, 3); /* Reserved */ + /* Base Address */ + build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 8, 0, 1, + vms->memmap[VIRT_UART].base); + /* Interrupt Type */ + build_append_int_noprefix(table_data, + (1 << 3) /* Bit[3] ARMH GIC interrupt */, 1); + build_append_int_noprefix(table_data, 0, 1); /* IRQ */ + /* Global System Interrupt */ + build_append_int_noprefix(table_data, + vms->irqmap[VIRT_UART] + ARM_SPI_BASE, 4); + build_append_int_noprefix(table_data, 3 /* 9600 */, 1); /* Baud Rate */ + build_append_int_noprefix(table_data, 0 /* No Parity */, 1); /* Parity */ + /* Stop Bits */ + build_append_int_noprefix(table_data, 1 /* 1 Stop bit */, 1); + /* Flow Control */ + build_append_int_noprefix(table_data, + (1 << 1) /* RTS/CTS hardware flow control */, 1); + /* Terminal Type */ + build_append_int_noprefix(table_data, 0 /* VT100 */, 1); + build_append_int_noprefix(table_data, 0, 1); /* Language */ + /* PCI Device ID */ + build_append_int_noprefix(table_data, 0xffff /* not a PCI device*/, 2); + /* PCI Vendor ID */ + build_append_int_noprefix(table_data, 0xffff /* not a PCI device*/, 2); + build_append_int_noprefix(table_data, 0, 1); /* PCI Bus Number */ + build_append_int_noprefix(table_data, 0, 1); /* PCI Device Number */ + build_append_int_noprefix(table_data, 0, 1); /* PCI Function Number */ + build_append_int_noprefix(table_data, 0, 4); /* PCI Flags */ + build_append_int_noprefix(table_data, 0, 1); /* PCI Segment */ + build_append_int_noprefix(table_data, 0, 4); /* Reserved */ - build_header(linker, table_data, (void *)(table_data->data + spcr_start), - "SPCR", table_data->len - spcr_start, 2, vms->oem_id, - vms->oem_table_id); + acpi_table_end(linker, &table); } /* diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h index 6f2f08a..012c4ff 100644 --- a/include/hw/acpi/acpi-defs.h +++ b/include/hw/acpi/acpi-defs.h @@ -118,38 +118,6 @@ typedef struct AcpiFadtData { #define ACPI_FADT_ARM_PSCI_USE_HVC (1 << 1) /* - * Serial Port Console Redirection Table (SPCR), Rev. 1.02 - * - * For .interface_type see Debug Port Table 2 (DBG2) serial port - * subtypes in Table 3, Rev. May 22, 2012 - */ -struct AcpiSerialPortConsoleRedirection { - ACPI_TABLE_HEADER_DEF - uint8_t interface_type; - uint8_t reserved1[3]; - struct AcpiGenericAddress base_address; - uint8_t interrupt_types; - uint8_t irq; - uint32_t gsi; - uint8_t baud; - uint8_t parity; - uint8_t stopbits; - uint8_t flowctrl; - uint8_t term_type; - uint8_t reserved2; - uint16_t pci_device_id; - uint16_t pci_vendor_id; - uint8_t pci_bus; - uint8_t pci_slot; - uint8_t pci_func; - uint32_t pci_flags; - uint8_t pci_seg; - uint32_t reserved3; -} QEMU_PACKED; -typedef struct AcpiSerialPortConsoleRedirection - AcpiSerialPortConsoleRedirection; - -/* * ACPI 1.0 Firmware ACPI Control Structure (FACS) */ struct AcpiFacsDescriptorRev1 { -- cgit v1.1