diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/acpi/acpi_init.c | 110 | ||||
| -rw-r--r-- | sys/dev/acpi/acpi_subr.c | 82 | ||||
| -rw-r--r-- | sys/include/dev/acpi/acpi.h | 36 | ||||
| -rw-r--r-- | sys/include/dev/acpi/acpivar.h | 40 | ||||
| -rw-r--r-- | sys/include/dev/acpi/tables.h | 130 | ||||
| -rw-r--r-- | sys/kern/init_main.c | 4 |
6 files changed, 402 insertions, 0 deletions
diff --git a/sys/dev/acpi/acpi_init.c b/sys/dev/acpi/acpi_init.c new file mode 100644 index 0000000..a8423e4 --- /dev/null +++ b/sys/dev/acpi/acpi_init.c @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <sys/limine.h> +#include <sys/syslog.h> +#include <sys/panic.h> +#include <dev/acpi/acpi.h> +#include <dev/acpi/tables.h> +#include <dev/acpi/acpivar.h> +#include <vm/vm.h> +#if defined(__x86_64__) +#include <machine/hpet.h> +#endif /* __x86_64__ */ + +#define pr_trace(fmt, ...) kprintf("acpi: " fmt, ##__VA_ARGS__) + +static struct acpi_root_sdt *root_sdt = NULL; +static size_t root_sdt_entries = 0; +static volatile struct limine_rsdp_request rsdp_req = { + .id = LIMINE_RSDP_REQUEST, + .revision = 0 +}; + +/* + * Writes out OEMID of ACPI header. + * + * @type: Type of structure (e.g RSDP) + * @oemid: OEMID of structure. + */ +static void +acpi_print_oemid(const char *type, char oemid[OEMID_SIZE]) +{ + if (type != NULL) { + pr_trace("%s OEMID: ", type); + } + + for (size_t i = 0; i < OEMID_SIZE; ++i) { + kprintf(OMIT_TIMESTAMP "%c", oemid[i]); + } + + kprintf(OMIT_TIMESTAMP "\n"); +} + +struct acpi_root_sdt * +acpi_get_root_sdt(void) +{ + return root_sdt; +} + +size_t +acpi_get_root_sdt_len(void) +{ + return root_sdt_entries; +} + +void +acpi_init(void) +{ + struct acpi_rsdp *rsdp; + + if (rsdp_req.response == NULL) { + panic("RSDP request has no response\n"); + } + + /* Fetch the RSDP */ + rsdp = rsdp_req.response->address; + acpi_print_oemid("RSDP", rsdp->oemid); + + /* Fetch the root SDT */ + if (rsdp->revision >= 2) { + root_sdt = PHYS_TO_VIRT(rsdp->xsdt_addr); + pr_trace("Using XSDT as root SDT\n"); + } else { + root_sdt = PHYS_TO_VIRT(rsdp->rsdt_addr); + pr_trace("Using RSDT as root SDT\n"); + } + + if (acpi_checksum(&root_sdt->hdr) != 0) { + panic("Root SDT checksum is invalid!\n"); + } + + root_sdt_entries = (root_sdt->hdr.length - sizeof(root_sdt->hdr)) / 4; +} diff --git a/sys/dev/acpi/acpi_subr.c b/sys/dev/acpi/acpi_subr.c new file mode 100644 index 0000000..7cf3287 --- /dev/null +++ b/sys/dev/acpi/acpi_subr.c @@ -0,0 +1,82 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <dev/acpi/acpi.h> +#include <dev/acpi/acpivar.h> +#include <dev/acpi/tables.h> +#include <vm/vm.h> +#include <string.h> + +/* + * Compute the ACPI checksum of a header. + * + * @hdr: HDR to check. + * + * Must return zero to be a valid checksum! + */ +uint8_t +acpi_checksum(struct acpi_header *hdr) +{ + uint8_t sum = 0; + + for (int i = 0; i < hdr->length; ++i) { + sum += ((char *)hdr)[i]; + } + + return sum; +} + +/* + * Looks up an ACPI table with a specific + * signature e.g "APIC" for MADT (if present). + * + * @query: The specific query to make e.g "APIC" + */ +void * +acpi_query(const char *query) +{ + struct acpi_header *hdr; + struct acpi_root_sdt *root_sdt; + size_t root_sdt_len, signature_len; + + root_sdt = acpi_get_root_sdt(); + root_sdt_len = acpi_get_root_sdt_len(); + signature_len = sizeof(hdr->signature); + + for (size_t i = 0; i < root_sdt_len; ++i) { + hdr = (struct acpi_header *)PHYS_TO_VIRT(root_sdt->tables[i]); + + if (memcmp(hdr->signature, query, signature_len) == 0) { + return (void *)hdr; + } + } + + return NULL; +} diff --git a/sys/include/dev/acpi/acpi.h b/sys/include/dev/acpi/acpi.h new file mode 100644 index 0000000..4c5b7d9 --- /dev/null +++ b/sys/include/dev/acpi/acpi.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _ACPI_H_ +#define _ACPI_H_ + +void *acpi_query(const char *query); +void acpi_init(void); + +#endif /* !_ACPI_H_ */ diff --git a/sys/include/dev/acpi/acpivar.h b/sys/include/dev/acpi/acpivar.h new file mode 100644 index 0000000..9a37dfb --- /dev/null +++ b/sys/include/dev/acpi/acpivar.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _ACPI_ACPIVAR_H_ +#define _ACPI_ACPIVAR_H_ + +#include <sys/types.h> +#include <dev/acpi/tables.h> + +uint8_t acpi_checksum(struct acpi_header *hdr); +struct acpi_root_sdt *acpi_get_root_sdt(void); +size_t acpi_get_root_sdt_len(void); + +#endif /* !_ACPI_ACPIVAR_H_ */ diff --git a/sys/include/dev/acpi/tables.h b/sys/include/dev/acpi/tables.h new file mode 100644 index 0000000..d5bfd52 --- /dev/null +++ b/sys/include/dev/acpi/tables.h @@ -0,0 +1,130 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _ACPI_TABLES_H_ +#define _ACPI_TABLES_H_ + +#include <sys/types.h> +#include <sys/cdefs.h> + +#define OEMID_SIZE 6 + +struct __packed acpi_header { + char signature[4]; /* ASCII signature string */ + uint32_t length; /* Length of table in bytes */ + uint8_t revision; /* Revision of the structure */ + uint8_t checksum; /* Checksum of the header */ + char oemid[OEMID_SIZE]; /* OEM-supplied string that IDs the OEM */ + char oem_table_id[8]; /* OEM-supplied string (used by OEM) */ + uint32_t oem_revision; /* OEM-supplied revision number */ + uint32_t creator_id; /* Vendor ID of creator utility */ + uint32_t creator_revision; /* Revision of creator utility */ +}; + +struct __packed acpi_rsdp { + uint64_t signature; /* RSD PTR */ + uint8_t checksum; /* Structure checksum */ + char oemid[OEMID_SIZE]; /* OEM-supplied string that IDs the OEM */ + uint8_t revision; /* Revision of the structure */ + uint32_t rsdt_addr; /* RSDT physical address */ + + /* Reserved if revision < 2 */ + uint32_t length; /* Length of table in bytes */ + uint64_t xsdt_addr; /* XSDT physical address */ + uint8_t ext_checksum; /* Extended checksum */ + uint8_t reserved[3]; +}; + +/* + * XSDT or RSDT depending + * on what revision the header + * says. + */ +struct __packed acpi_root_sdt { + struct acpi_header hdr; + uint32_t tables[]; +}; + +struct __packed acpi_madt { + struct acpi_header hdr; + uint32_t lapic_addr; + uint32_t flags; +}; + +struct __packed apic_header { + uint8_t type; + uint8_t length; +}; + +struct __packed local_apic { + struct apic_header hdr; + uint8_t processor_id; + uint8_t apic_id; + uint32_t flags; +}; + +struct __packed ioapic { + struct apic_header hdr; + uint8_t ioapic_id; + uint8_t reserved; + uint32_t ioapic_addr; + uint32_t gsi_base; +}; + +struct __packed interrupt_override { + struct apic_header hdr; + uint8_t bus; + uint8_t source; /* IRQ */ + uint32_t interrupt; /* GSI */ + uint16_t flags; +}; + +struct __packed acpi_gas { + uint8_t address_space_id; + uint8_t register_bit_width; + uint8_t register_bit_offset; + uint8_t reserved; + uint64_t address; +}; + +struct __packed acpi_hpet { + struct acpi_header hdr; + uint8_t hardware_rev_id; + uint8_t comparator_count : 5; + uint8_t counter_size : 1; + uint8_t reserved : 1; + uint8_t legacy_replacement : 1; + uint16_t pci_vendor_id; + struct acpi_gas gas; + uint8_t hpet_number; + uint16_t minimum_tick; + uint8_t page_protection; +}; + +#endif /* _ACPI_TABLES_H_ */ diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c index d520542..0071a20 100644 --- a/sys/kern/init_main.c +++ b/sys/kern/init_main.c @@ -30,6 +30,7 @@ #include <sys/reboot.h> #include <sys/syslog.h> #include <dev/cons/cons.h> +#include <dev/acpi/acpi.h> #include <machine/cpu.h> int @@ -40,6 +41,9 @@ main(void) kprintf("Starting Hyra/%s v%s: %s\n", HYRA_ARCH, HYRA_VERSION, HYRA_BUILDDATE); + /* Start the ACPI subsystem */ + acpi_init(); + /* Startup the BSP */ cpu_startup(); |