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Diffstat (limited to 'src/arch/x86/acpigen.c')
| -rw-r--r-- | src/arch/x86/acpigen.c | 1888 |
1 files changed, 0 insertions, 1888 deletions
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c deleted file mode 100644 index dfc2a5adf4..0000000000 --- a/src/arch/x86/acpigen.c +++ /dev/null @@ -1,1888 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* This file is part of the coreboot project. */ - -/* How much nesting do we support? */ -#define ACPIGEN_LENSTACK_SIZE 10 - -/* - * If you need to change this, change acpigen_write_len_f and - * acpigen_pop_len - */ - -#define ACPIGEN_MAXLEN 0xfffff - -#include <lib.h> -#include <string.h> -#include <arch/acpigen.h> -#include <assert.h> -#include <console/console.h> -#include <device/device.h> -#include <device/pci_def.h> -#include <device/pci_type.h> - -static char *gencurrent; - -char *len_stack[ACPIGEN_LENSTACK_SIZE]; -int ltop = 0; - -void acpigen_write_len_f(void) -{ - ASSERT(ltop < (ACPIGEN_LENSTACK_SIZE - 1)) - len_stack[ltop++] = gencurrent; - acpigen_emit_byte(0); - acpigen_emit_byte(0); - acpigen_emit_byte(0); -} - -void acpigen_pop_len(void) -{ - int len; - ASSERT(ltop > 0) - char *p = len_stack[--ltop]; - len = gencurrent - p; - ASSERT(len <= ACPIGEN_MAXLEN) - /* generate store length for 0xfffff max */ - p[0] = (0x80 | (len & 0xf)); - p[1] = (len >> 4 & 0xff); - p[2] = (len >> 12 & 0xff); - -} - -void acpigen_set_current(char *curr) -{ - gencurrent = curr; -} - -char *acpigen_get_current(void) -{ - return gencurrent; -} - -void acpigen_emit_byte(unsigned char b) -{ - (*gencurrent++) = b; -} - -void acpigen_emit_ext_op(uint8_t op) -{ - acpigen_emit_byte(EXT_OP_PREFIX); - acpigen_emit_byte(op); -} - -void acpigen_emit_word(unsigned int data) -{ - acpigen_emit_byte(data & 0xff); - acpigen_emit_byte((data >> 8) & 0xff); -} - -void acpigen_emit_dword(unsigned int data) -{ - acpigen_emit_byte(data & 0xff); - acpigen_emit_byte((data >> 8) & 0xff); - acpigen_emit_byte((data >> 16) & 0xff); - acpigen_emit_byte((data >> 24) & 0xff); -} - -char *acpigen_write_package(int nr_el) -{ - char *p; - acpigen_emit_byte(PACKAGE_OP); - acpigen_write_len_f(); - p = acpigen_get_current(); - acpigen_emit_byte(nr_el); - return p; -} - -void acpigen_write_byte(unsigned int data) -{ - acpigen_emit_byte(BYTE_PREFIX); - acpigen_emit_byte(data & 0xff); -} - -void acpigen_write_word(unsigned int data) -{ - acpigen_emit_byte(WORD_PREFIX); - acpigen_emit_word(data); -} - -void acpigen_write_dword(unsigned int data) -{ - acpigen_emit_byte(DWORD_PREFIX); - acpigen_emit_dword(data); -} - -void acpigen_write_qword(uint64_t data) -{ - acpigen_emit_byte(QWORD_PREFIX); - acpigen_emit_dword(data & 0xffffffff); - acpigen_emit_dword((data >> 32) & 0xffffffff); -} - -void acpigen_write_zero(void) -{ - acpigen_emit_byte(ZERO_OP); -} - -void acpigen_write_one(void) -{ - acpigen_emit_byte(ONE_OP); -} - -void acpigen_write_ones(void) -{ - acpigen_emit_byte(ONES_OP); -} - -void acpigen_write_integer(uint64_t data) -{ - if (data == 0) - acpigen_write_zero(); - else if (data == 1) - acpigen_write_one(); - else if (data <= 0xff) - acpigen_write_byte((unsigned char)data); - else if (data <= 0xffff) - acpigen_write_word((unsigned int)data); - else if (data <= 0xffffffff) - acpigen_write_dword((unsigned int)data); - else - acpigen_write_qword(data); -} - -void acpigen_write_name_zero(const char *name) -{ - acpigen_write_name(name); - acpigen_write_one(); -} - -void acpigen_write_name_one(const char *name) -{ - acpigen_write_name(name); - acpigen_write_zero(); -} - -void acpigen_write_name_byte(const char *name, uint8_t val) -{ - acpigen_write_name(name); - acpigen_write_byte(val); -} - -void acpigen_write_name_dword(const char *name, uint32_t val) -{ - acpigen_write_name(name); - acpigen_write_dword(val); -} - -void acpigen_write_name_qword(const char *name, uint64_t val) -{ - acpigen_write_name(name); - acpigen_write_qword(val); -} - -void acpigen_write_name_integer(const char *name, uint64_t val) -{ - acpigen_write_name(name); - acpigen_write_integer(val); -} - -void acpigen_write_name_string(const char *name, const char *string) -{ - acpigen_write_name(name); - acpigen_write_string(string); -} - -void acpigen_write_name_unicode(const char *name, const char *string) -{ - const size_t len = strlen(string) + 1; - acpigen_write_name(name); - acpigen_emit_byte(BUFFER_OP); - acpigen_write_len_f(); - acpigen_write_integer(len); - for (size_t i = 0; i < len; i++) { - const char c = string[i]; - /* Simple ASCII to UTF-16 conversion, replace non ASCII characters */ - acpigen_emit_word(c >= 0 ? c : '?'); - } - acpigen_pop_len(); -} - -void acpigen_emit_stream(const char *data, int size) -{ - int i; - for (i = 0; i < size; i++) - acpigen_emit_byte(data[i]); -} - -void acpigen_emit_string(const char *string) -{ - acpigen_emit_stream(string, string ? strlen(string) : 0); - acpigen_emit_byte('\0'); /* NUL */ -} - -void acpigen_write_string(const char *string) -{ - acpigen_emit_byte(STRING_PREFIX); - acpigen_emit_string(string); -} - -void acpigen_write_coreboot_hid(enum coreboot_acpi_ids id) -{ - char hid[9]; /* BOOTxxxx */ - - snprintf(hid, sizeof(hid), "%.4s%04X", COREBOOT_ACPI_ID, id); - acpigen_write_name_string("_HID", hid); -} - -/* - * The naming conventions for ACPI namespace names are a bit tricky as - * each element has to be 4 chars wide ("All names are a fixed 32 bits.") - * and "By convention, when an ASL compiler pads a name shorter than 4 - * characters, it is done so with trailing underscores ('_')". - * - * Check sections 5.3, 18.2.2 and 18.4 of ACPI spec 3.0 for details. - */ - -static void acpigen_emit_simple_namestring(const char *name) -{ - int i; - char ud[] = "____"; - for (i = 0; i < 4; i++) { - if ((name[i] == '\0') || (name[i] == '.')) { - acpigen_emit_stream(ud, 4 - i); - break; - } - acpigen_emit_byte(name[i]); - } -} - -static void acpigen_emit_double_namestring(const char *name, int dotpos) -{ - acpigen_emit_byte(DUAL_NAME_PREFIX); - acpigen_emit_simple_namestring(name); - acpigen_emit_simple_namestring(&name[dotpos + 1]); -} - -static void acpigen_emit_multi_namestring(const char *name) -{ - int count = 0; - unsigned char *pathlen; - acpigen_emit_byte(MULTI_NAME_PREFIX); - acpigen_emit_byte(ZERO_OP); - pathlen = ((unsigned char *) acpigen_get_current()) - 1; - - while (name[0] != '\0') { - acpigen_emit_simple_namestring(name); - /* find end or next entity */ - while ((name[0] != '.') && (name[0] != '\0')) - name++; - /* forward to next */ - if (name[0] == '.') - name++; - count++; - } - - pathlen[0] = count; -} - - -void acpigen_emit_namestring(const char *namepath) -{ - int dotcount = 0, i; - int dotpos = 0; - - /* We can start with a '\'. */ - if (namepath[0] == '\\') { - acpigen_emit_byte('\\'); - namepath++; - } - - /* And there can be any number of '^' */ - while (namepath[0] == '^') { - acpigen_emit_byte('^'); - namepath++; - } - - /* If we have only \\ or only ^...^. Then we need to put a null - name (0x00). */ - if (namepath[0] == '\0') { - acpigen_emit_byte(ZERO_OP); - return; - } - - i = 0; - while (namepath[i] != '\0') { - if (namepath[i] == '.') { - dotcount++; - dotpos = i; - } - i++; - } - - if (dotcount == 0) - acpigen_emit_simple_namestring(namepath); - else if (dotcount == 1) - acpigen_emit_double_namestring(namepath, dotpos); - else - acpigen_emit_multi_namestring(namepath); -} - -void acpigen_write_name(const char *name) -{ - acpigen_emit_byte(NAME_OP); - acpigen_emit_namestring(name); -} - -void acpigen_write_scope(const char *name) -{ - acpigen_emit_byte(SCOPE_OP); - acpigen_write_len_f(); - acpigen_emit_namestring(name); -} - -void acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len) -{ -/* - Processor (\_SB.CPcpuindex, cpuindex, pblock_addr, pblock_len) - { -*/ - char pscope[16]; - acpigen_emit_ext_op(PROCESSOR_OP); - acpigen_write_len_f(); - - snprintf(pscope, sizeof(pscope), - CONFIG_ACPI_CPU_STRING, (unsigned int) cpuindex); - acpigen_emit_namestring(pscope); - acpigen_emit_byte(cpuindex); - acpigen_emit_dword(pblock_addr); - acpigen_emit_byte(pblock_len); -} - -void acpigen_write_processor_package(const char *const name, - const unsigned int first_core, - const unsigned int core_count) -{ - unsigned int i; - char pscope[16]; - - acpigen_write_name(name); - acpigen_write_package(core_count); - for (i = first_core; i < first_core + core_count; ++i) { - snprintf(pscope, sizeof(pscope), CONFIG_ACPI_CPU_STRING, i); - acpigen_emit_namestring(pscope); - } - acpigen_pop_len(); -} - -/* Method to notify all CPU cores */ -void acpigen_write_processor_cnot(const unsigned int number_of_cores) -{ - int core_id; - - acpigen_write_method("\\_SB.CNOT", 1); - for (core_id = 0; core_id < number_of_cores; core_id++) { - char buffer[DEVICE_PATH_MAX]; - snprintf(buffer, sizeof(buffer), CONFIG_ACPI_CPU_STRING, - core_id); - acpigen_emit_byte(NOTIFY_OP); - acpigen_emit_namestring(buffer); - acpigen_emit_byte(ARG0_OP); - } - acpigen_pop_len(); -} - -/* - * Generate ACPI AML code for OperationRegion - * Arg0: Pointer to struct opregion opreg = OPREGION(rname, space, offset, len) - * where rname is region name, space is region space, offset is region offset & - * len is region length. - * OperationRegion(regionname, regionspace, regionoffset, regionlength) - */ -void acpigen_write_opregion(struct opregion *opreg) -{ - /* OpregionOp */ - acpigen_emit_ext_op(OPREGION_OP); - /* NameString 4 chars only */ - acpigen_emit_simple_namestring(opreg->name); - /* RegionSpace */ - acpigen_emit_byte(opreg->regionspace); - /* RegionOffset & RegionLen, it can be byte word or double word */ - acpigen_write_integer(opreg->regionoffset); - acpigen_write_integer(opreg->regionlen); -} - -/* - * Generate ACPI AML code for Mutex - * Arg0: Pointer to name of mutex - * Arg1: Initial value of mutex - */ -void acpigen_write_mutex(const char *name, const uint8_t flags) -{ - /* MutexOp */ - acpigen_emit_ext_op(MUTEX_OP); - /* NameString 4 chars only */ - acpigen_emit_simple_namestring(name); - acpigen_emit_byte(flags); -} - -void acpigen_write_acquire(const char *name, const uint16_t val) -{ - /* AcquireOp */ - acpigen_emit_ext_op(ACQUIRE_OP); - /* NameString 4 chars only */ - acpigen_emit_simple_namestring(name); - acpigen_emit_word(val); -} - -void acpigen_write_release(const char *name) -{ - /* ReleaseOp */ - acpigen_emit_ext_op(RELEASE_OP); - /* NameString 4 chars only */ - acpigen_emit_simple_namestring(name); -} - -static void acpigen_write_field_length(uint32_t len) -{ - uint8_t i, j; - uint8_t emit[4]; - - i = 1; - if (len < 0x40) { - emit[0] = len & 0x3F; - } else { - emit[0] = len & 0xF; - len >>= 4; - while (len) { - emit[i] = len & 0xFF; - i++; - len >>= 8; - } - } - /* Update bit 7:6 : Number of bytes followed by emit[0] */ - emit[0] |= (i - 1) << 6; - - for (j = 0; j < i; j++) - acpigen_emit_byte(emit[j]); -} - -static void acpigen_write_field_offset(uint32_t offset, - uint32_t current_bit_pos) -{ - uint32_t diff_bits; - - if (offset < current_bit_pos) { - printk(BIOS_WARNING, "%s: Cannot move offset backward", - __func__); - return; - } - - diff_bits = offset - current_bit_pos; - /* Upper limit */ - if (diff_bits > 0xFFFFFFF) { - printk(BIOS_WARNING, "%s: Offset very large to encode", - __func__); - return; - } - - acpigen_emit_byte(0); - acpigen_write_field_length(diff_bits); -} - -static void acpigen_write_field_name(const char *name, uint32_t size) -{ - acpigen_emit_simple_namestring(name); - acpigen_write_field_length(size); -} - -/* - * Generate ACPI AML code for Field - * Arg0: region name - * Arg1: Pointer to struct fieldlist. - * Arg2: no. of entries in Arg1 - * Arg3: flags which indicate filed access type, lock rule & update rule. - * Example with fieldlist - * struct fieldlist l[] = { - * FIELDLIST_OFFSET(0x84), - * FIELDLIST_NAMESTR("PMCS", 2), - * }; - * acpigen_write_field("UART", l, ARRAY_SIZE(l), FIELD_ANYACC | FIELD_NOLOCK | - * FIELD_PRESERVE); - * Output: - * Field (UART, AnyAcc, NoLock, Preserve) - * { - * Offset (0x84), - * PMCS, 2 - * } - */ -void acpigen_write_field(const char *name, const struct fieldlist *l, size_t count, - uint8_t flags) -{ - uint16_t i; - uint32_t current_bit_pos = 0; - - /* FieldOp */ - acpigen_emit_ext_op(FIELD_OP); - /* Package Length */ - acpigen_write_len_f(); - /* NameString 4 chars only */ - acpigen_emit_simple_namestring(name); - /* Field Flag */ - acpigen_emit_byte(flags); - - for (i = 0; i < count; i++) { - switch (l[i].type) { - case NAME_STRING: - acpigen_write_field_name(l[i].name, l[i].bits); - current_bit_pos += l[i].bits; - break; - case OFFSET: - acpigen_write_field_offset(l[i].bits, current_bit_pos); - current_bit_pos = l[i].bits; - break; - default: - printk(BIOS_ERR, "%s: Invalid field type 0x%X\n" - , __func__, l[i].type); - break; - } - } - acpigen_pop_len(); -} - -/* - * Generate ACPI AML code for IndexField - * Arg0: region name - * Arg1: Pointer to struct fieldlist. - * Arg2: no. of entries in Arg1 - * Arg3: flags which indicate filed access type, lock rule & update rule. - * Example with fieldlist - * struct fieldlist l[] = { - * FIELDLIST_OFFSET(0x84), - * FIELDLIST_NAMESTR("PMCS", 2), - * }; - * acpigen_write_field("IDX", "DATA" l, ARRAY_SIZE(l), FIELD_ANYACC | - * FIELD_NOLOCK | - * FIELD_PRESERVE); - * Output: - * IndexField (IDX, DATA, AnyAcc, NoLock, Preserve) - * { - * Offset (0x84), - * PMCS, 2 - * } - */ -void acpigen_write_indexfield(const char *idx, const char *data, - struct fieldlist *l, size_t count, uint8_t flags) -{ - uint16_t i; - uint32_t current_bit_pos = 0; - - /* FieldOp */ - acpigen_emit_ext_op(INDEX_FIELD_OP); - /* Package Length */ - acpigen_write_len_f(); - /* NameString 4 chars only */ - acpigen_emit_simple_namestring(idx); - /* NameString 4 chars only */ - acpigen_emit_simple_namestring(data); - /* Field Flag */ - acpigen_emit_byte(flags); - - for (i = 0; i < count; i++) { - switch (l[i].type) { - case NAME_STRING: - acpigen_write_field_name(l[i].name, l[i].bits); - current_bit_pos += l[i].bits; - break; - case OFFSET: - acpigen_write_field_offset(l[i].bits, current_bit_pos); - current_bit_pos = l[i].bits; - break; - default: - printk(BIOS_ERR, "%s: Invalid field type 0x%X\n" - , __func__, l[i].type); - break; - } - } - acpigen_pop_len(); -} - -void acpigen_write_empty_PCT(void) -{ -/* - Name (_PCT, Package (0x02) - { - ResourceTemplate () - { - Register (FFixedHW, - 0x00, // Bit Width - 0x00, // Bit Offset - 0x0000000000000000, // Address - ,) - }, - - ResourceTemplate () - { - Register (FFixedHW, - 0x00, // Bit Width - 0x00, // Bit Offset - 0x0000000000000000, // Address - ,) - } - }) -*/ - static char stream[] = { - /* 00000030 "0._PCT.," */ - 0x08, 0x5F, 0x50, 0x43, 0x54, 0x12, 0x2C, - /* 00000038 "........" */ - 0x02, 0x11, 0x14, 0x0A, 0x11, 0x82, 0x0C, 0x00, - /* 00000040 "........" */ - 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - /* 00000048 "....y..." */ - 0x00, 0x00, 0x00, 0x00, 0x79, 0x00, 0x11, 0x14, - /* 00000050 "........" */ - 0x0A, 0x11, 0x82, 0x0C, 0x00, 0x7F, 0x00, 0x00, - /* 00000058 "........" */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x79, 0x00 - }; - acpigen_emit_stream(stream, ARRAY_SIZE(stream)); -} - -void acpigen_write_empty_PTC(void) -{ -/* - Name (_PTC, Package (0x02) - { - ResourceTemplate () - { - Register (FFixedHW, - 0x00, // Bit Width - 0x00, // Bit Offset - 0x0000000000000000, // Address - ,) - }, - - ResourceTemplate () - { - Register (FFixedHW, - 0x00, // Bit Width - 0x00, // Bit Offset - 0x0000000000000000, // Address - ,) - } - }) -*/ - acpi_addr_t addr = { - .space_id = ACPI_ADDRESS_SPACE_FIXED, - .bit_width = 0, - .bit_offset = 0, - .access_size = 0, - .addrl = 0, - .addrh = 0, - }; - - acpigen_write_name("_PTC"); - acpigen_write_package(2); - - /* ControlRegister */ - acpigen_write_register_resource(&addr); - - /* StatusRegister */ - acpigen_write_register_resource(&addr); - - acpigen_pop_len(); -} - -static void __acpigen_write_method(const char *name, uint8_t flags) -{ - acpigen_emit_byte(METHOD_OP); - acpigen_write_len_f(); - acpigen_emit_namestring(name); - acpigen_emit_byte(flags); -} - -/* Method (name, nargs, NotSerialized) */ -void acpigen_write_method(const char *name, int nargs) -{ - __acpigen_write_method(name, (nargs & 7)); -} - -/* Method (name, nargs, Serialized) */ -void acpigen_write_method_serialized(const char *name, int nargs) -{ - __acpigen_write_method(name, (nargs & 7) | (1 << 3)); -} - -void acpigen_write_device(const char *name) -{ - acpigen_emit_ext_op(DEVICE_OP); - acpigen_write_len_f(); - acpigen_emit_namestring(name); -} - -void acpigen_write_STA(uint8_t status) -{ - /* - * Method (_STA, 0, NotSerialized) { Return (status) } - */ - acpigen_write_method("_STA", 0); - acpigen_emit_byte(RETURN_OP); - acpigen_write_byte(status); - acpigen_pop_len(); -} - -/* - * Generates a func with max supported P-states. - */ -void acpigen_write_PPC(u8 nr) -{ -/* - Method (_PPC, 0, NotSerialized) - { - Return (nr) - } -*/ - acpigen_write_method("_PPC", 0); - acpigen_emit_byte(RETURN_OP); - /* arg */ - acpigen_write_byte(nr); - acpigen_pop_len(); -} - -/* - * Generates a func with max supported P-states saved - * in the variable PPCM. - */ -void acpigen_write_PPC_NVS(void) -{ -/* - Method (_PPC, 0, NotSerialized) - { - Return (PPCM) - } -*/ - acpigen_write_method("_PPC", 0); - acpigen_emit_byte(RETURN_OP); - /* arg */ - acpigen_emit_namestring("PPCM"); - acpigen_pop_len(); -} - -void acpigen_write_TPC(const char *gnvs_tpc_limit) -{ -/* - // Sample _TPC method - Method (_TPC, 0, NotSerialized) - { - Return (\TLVL) - } -*/ - acpigen_write_method("_TPC", 0); - acpigen_emit_byte(RETURN_OP); - acpigen_emit_namestring(gnvs_tpc_limit); - acpigen_pop_len(); -} - -void acpigen_write_PRW(u32 wake, u32 level) -{ - /* - * Name (_PRW, Package () { wake, level } - */ - acpigen_write_name("_PRW"); - acpigen_write_package(2); - acpigen_write_integer(wake); - acpigen_write_integer(level); - acpigen_pop_len(); -} - -void acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, - u32 busmLat, u32 control, u32 status) -{ - acpigen_write_package(6); - acpigen_write_dword(coreFreq); - acpigen_write_dword(power); - acpigen_write_dword(transLat); - acpigen_write_dword(busmLat); - acpigen_write_dword(control); - acpigen_write_dword(status); - acpigen_pop_len(); - - printk(BIOS_DEBUG, "PSS: %uMHz power %u control 0x%x status 0x%x\n", - coreFreq, power, control, status); -} - -void acpigen_write_PSD_package(u32 domain, u32 numprocs, PSD_coord coordtype) -{ - acpigen_write_name("_PSD"); - acpigen_write_package(1); - acpigen_write_package(5); - acpigen_write_byte(5); // 5 values - acpigen_write_byte(0); // revision 0 - acpigen_write_dword(domain); - acpigen_write_dword(coordtype); - acpigen_write_dword(numprocs); - acpigen_pop_len(); - acpigen_pop_len(); -} - -void acpigen_write_CST_package_entry(acpi_cstate_t *cstate) -{ - acpigen_write_package(4); - acpigen_write_register_resource(&cstate->resource); - acpigen_write_dword(cstate->ctype); - acpigen_write_dword(cstate->latency); - acpigen_write_dword(cstate->power); - acpigen_pop_len(); -} - -void acpigen_write_CST_package(acpi_cstate_t *cstate, int nentries) -{ - int i; - acpigen_write_name("_CST"); - acpigen_write_package(nentries+1); - acpigen_write_dword(nentries); - - for (i = 0; i < nentries; i++) - acpigen_write_CST_package_entry(cstate + i); - - acpigen_pop_len(); -} - -void acpigen_write_CSD_package(u32 domain, u32 numprocs, CSD_coord coordtype, - u32 index) -{ - acpigen_write_name("_CSD"); - acpigen_write_package(1); - acpigen_write_package(6); - acpigen_write_byte(6); // 6 values - acpigen_write_byte(0); // revision 0 - acpigen_write_dword(domain); - acpigen_write_dword(coordtype); - acpigen_write_dword(numprocs); - acpigen_write_dword(index); - acpigen_pop_len(); - acpigen_pop_len(); -} - -void acpigen_write_TSS_package(int entries, acpi_tstate_t *tstate_list) -{ -/* - Sample _TSS package with 100% and 50% duty cycles - Name (_TSS, Package (0x02) - { - Package(){100, 1000, 0, 0x00, 0) - Package(){50, 520, 0, 0x18, 0) - }) -*/ - int i; - acpi_tstate_t *tstate = tstate_list; - - acpigen_write_name("_TSS"); - acpigen_write_package(entries); - - for (i = 0; i < entries; i++) { - acpigen_write_package(5); - acpigen_write_dword(tstate->percent); - acpigen_write_dword(tstate->power); - acpigen_write_dword(tstate->latency); - acpigen_write_dword(tstate->control); - acpigen_write_dword(tstate->status); - acpigen_pop_len(); - tstate++; - } - - acpigen_pop_len(); -} - -void acpigen_write_TSD_package(u32 domain, u32 numprocs, PSD_coord coordtype) -{ - acpigen_write_name("_TSD"); - acpigen_write_package(1); - acpigen_write_package(5); - acpigen_write_byte(5); // 5 values - acpigen_write_byte(0); // revision 0 - acpigen_write_dword(domain); - acpigen_write_dword(coordtype); - acpigen_write_dword(numprocs); - acpigen_pop_len(); - acpigen_pop_len(); -} - - - -void acpigen_write_mem32fixed(int readwrite, u32 base, u32 size) -{ - /* - * ACPI 4.0 section 6.4.3.4: 32-Bit Fixed Memory Range Descriptor - * Byte 0: - * Bit7 : 1 => big item - * Bit6-0: 0000110 (0x6) => 32-bit fixed memory - */ - acpigen_emit_byte(0x86); - /* Byte 1+2: length (0x0009) */ - acpigen_emit_byte(0x09); - acpigen_emit_byte(0x00); - /* bit1-7 are ignored */ - acpigen_emit_byte(readwrite ? 0x01 : 0x00); - acpigen_emit_dword(base); - acpigen_emit_dword(size); -} - -static void acpigen_write_register(const acpi_addr_t *addr) -{ - acpigen_emit_byte(0x82); /* Register Descriptor */ - acpigen_emit_byte(0x0c); /* Register Length 7:0 */ - acpigen_emit_byte(0x00); /* Register Length 15:8 */ - acpigen_emit_byte(addr->space_id); /* Address Space ID */ - acpigen_emit_byte(addr->bit_width); /* Register Bit Width */ - acpigen_emit_byte(addr->bit_offset); /* Register Bit Offset */ - acpigen_emit_byte(addr->access_size); /* Register Access Size */ - acpigen_emit_dword(addr->addrl); /* Register Address Low */ - acpigen_emit_dword(addr->addrh); /* Register Address High */ -} - -void acpigen_write_register_resource(const acpi_addr_t *addr) -{ - acpigen_write_resourcetemplate_header(); - acpigen_write_register(addr); - acpigen_write_resourcetemplate_footer(); -} - -void acpigen_write_irq(u16 mask) -{ - /* - * ACPI 3.0b section 6.4.2.1: IRQ Descriptor - * Byte 0: - * Bit7 : 0 => small item - * Bit6-3: 0100 (0x4) => IRQ port descriptor - * Bit2-0: 010 (0x2) => 2 Bytes long - */ - acpigen_emit_byte(0x22); - acpigen_emit_byte(mask & 0xff); - acpigen_emit_byte((mask >> 8) & 0xff); -} - -void acpigen_write_io16(u16 min, u16 max, u8 align, u8 len, u8 decode16) -{ - /* - * ACPI 4.0 section 6.4.2.6: I/O Port Descriptor - * Byte 0: - * Bit7 : 0 => small item - * Bit6-3: 1000 (0x8) => I/O port descriptor - * Bit2-0: 111 (0x7) => 7 Bytes long - */ - acpigen_emit_byte(0x47); - /* Does the device decode all 16 or just 10 bits? */ - /* bit1-7 are ignored */ - acpigen_emit_byte(decode16 ? 0x01 : 0x00); - /* minimum base address the device may be configured for */ - acpigen_emit_byte(min & 0xff); - acpigen_emit_byte((min >> 8) & 0xff); - /* maximum base address the device may be configured for */ - acpigen_emit_byte(max & 0xff); - acpigen_emit_byte((max >> 8) & 0xff); - /* alignment for min base */ - acpigen_emit_byte(align & 0xff); - acpigen_emit_byte(len & 0xff); -} - -void acpigen_write_resourcetemplate_header(void) -{ - /* - * A ResourceTemplate() is a Buffer() with a - * (Byte|Word|DWord) containing the length, followed by one or more - * resource items, terminated by the end tag. - * (small item 0xf, len 1) - */ - acpigen_emit_byte(BUFFER_OP); - acpigen_write_len_f(); - acpigen_emit_byte(WORD_PREFIX); - len_stack[ltop++] = acpigen_get_current(); - /* Add 2 dummy bytes for the ACPI word (keep aligned with - the calculation in acpigen_write_resourcetemplate() below). */ - acpigen_emit_byte(0x00); - acpigen_emit_byte(0x00); -} - -void acpigen_write_resourcetemplate_footer(void) -{ - char *p = len_stack[--ltop]; - int len; - /* - * end tag (acpi 4.0 Section 6.4.2.8) - * 0x79 <checksum> - * 0x00 is treated as a good checksum according to the spec - * and is what iasl generates. - */ - acpigen_emit_byte(0x79); - acpigen_emit_byte(0x00); - - /* Start counting past the 2-bytes length added in - acpigen_write_resourcetemplate() above. */ - len = acpigen_get_current() - (p + 2); - - /* patch len word */ - p[0] = len & 0xff; - p[1] = (len >> 8) & 0xff; - /* patch len field */ - acpigen_pop_len(); -} - -static void acpigen_add_mainboard_rsvd_mem32(void *gp, struct device *dev, - struct resource *res) -{ - acpigen_write_mem32fixed(0, res->base, res->size); -} - -static void acpigen_add_mainboard_rsvd_io(void *gp, struct device *dev, - struct resource *res) -{ - resource_t base = res->base; - resource_t size = res->size; - while (size > 0) { - resource_t sz = size > 255 ? 255 : size; - acpigen_write_io16(base, base, 0, sz, 1); - size -= sz; - base += sz; - } -} - -void acpigen_write_mainboard_resource_template(void) -{ - acpigen_write_resourcetemplate_header(); - - /* Add reserved memory ranges. */ - search_global_resources( - IORESOURCE_MEM | IORESOURCE_RESERVE, - IORESOURCE_MEM | IORESOURCE_RESERVE, - acpigen_add_mainboard_rsvd_mem32, 0); - - /* Add reserved io ranges. */ - search_global_resources( - IORESOURCE_IO | IORESOURCE_RESERVE, - IORESOURCE_IO | IORESOURCE_RESERVE, - acpigen_add_mainboard_rsvd_io, 0); - - acpigen_write_resourcetemplate_footer(); -} - -void acpigen_write_mainboard_resources(const char *scope, const char *name) -{ - acpigen_write_scope(scope); - acpigen_write_name(name); - acpigen_write_mainboard_resource_template(); - acpigen_pop_len(); -} - -static int hex2bin(const char c) -{ - if (c >= 'A' && c <= 'F') - return c - 'A' + 10; - if (c >= 'a' && c <= 'f') - return c - 'a' + 10; - return c - '0'; -} - -void acpigen_emit_eisaid(const char *eisaid) -{ - u32 compact = 0; - - /* Clamping individual values would be better but - there is a disagreement over what is a valid - EISA id, so accept anything and don't clamp, - parent code should create a valid EISAid. - */ - compact |= (eisaid[0] - 'A' + 1) << 26; - compact |= (eisaid[1] - 'A' + 1) << 21; - compact |= (eisaid[2] - 'A' + 1) << 16; - compact |= hex2bin(eisaid[3]) << 12; - compact |= hex2bin(eisaid[4]) << 8; - compact |= hex2bin(eisaid[5]) << 4; - compact |= hex2bin(eisaid[6]); - - acpigen_emit_byte(0xc); - acpigen_emit_byte((compact >> 24) & 0xff); - acpigen_emit_byte((compact >> 16) & 0xff); - acpigen_emit_byte((compact >> 8) & 0xff); - acpigen_emit_byte(compact & 0xff); -} - -/* - * ToUUID(uuid) - * - * ACPI 6.1 Section 19.6.136 table 19-385 defines a special output - * order for the bytes that make up a UUID Buffer object. - * UUID byte order for input: - * aabbccdd-eeff-gghh-iijj-kkllmmnnoopp - * UUID byte order for output: - * ddccbbaa-ffee-hhgg-iijj-kkllmmnnoopp - */ -#define UUID_LEN 16 -void acpigen_write_uuid(const char *uuid) -{ - uint8_t buf[UUID_LEN]; - size_t i, order[UUID_LEN] = { 3, 2, 1, 0, 5, 4, 7, 6, - 8, 9, 10, 11, 12, 13, 14, 15 }; - - /* Parse UUID string into bytes */ - if (hexstrtobin(uuid, buf, UUID_LEN) < UUID_LEN) - return; - - /* BufferOp */ - acpigen_emit_byte(BUFFER_OP); - acpigen_write_len_f(); - - /* Buffer length in bytes */ - acpigen_write_word(UUID_LEN); - - /* Output UUID in expected order */ - for (i = 0; i < UUID_LEN; i++) - acpigen_emit_byte(buf[order[i]]); - - acpigen_pop_len(); -} - -/* - * Name (_PRx, Package(One) { name }) - * ... - * PowerResource (name, level, order) - */ -void acpigen_write_power_res(const char *name, uint8_t level, uint16_t order, - const char * const dev_states[], size_t dev_states_count) -{ - size_t i; - for (i = 0; i < dev_states_count; i++) { - acpigen_write_name(dev_states[i]); - acpigen_write_package(1); - acpigen_emit_simple_namestring(name); - acpigen_pop_len(); /* Package */ - } - - acpigen_emit_ext_op(POWER_RES_OP); - - acpigen_write_len_f(); - - acpigen_emit_simple_namestring(name); - acpigen_emit_byte(level); - acpigen_emit_word(order); -} - -/* Sleep (ms) */ -void acpigen_write_sleep(uint64_t sleep_ms) -{ - acpigen_emit_ext_op(SLEEP_OP); - acpigen_write_integer(sleep_ms); -} - -void acpigen_write_store(void) -{ - acpigen_emit_byte(STORE_OP); -} - -/* Store (src, dst) */ -void acpigen_write_store_ops(uint8_t src, uint8_t dst) -{ - acpigen_write_store(); - acpigen_emit_byte(src); - acpigen_emit_byte(dst); -} - -/* Store (src, "namestr") */ -void acpigen_write_store_op_to_namestr(uint8_t src, const char *dst) -{ - acpigen_write_store(); - acpigen_emit_byte(src); - acpigen_emit_namestring(dst); -} - -/* Or (arg1, arg2, res) */ -void acpigen_write_or(uint8_t arg1, uint8_t arg2, uint8_t res) -{ - acpigen_emit_byte(OR_OP); - acpigen_emit_byte(arg1); - acpigen_emit_byte(arg2); - acpigen_emit_byte(res); -} - -/* Xor (arg1, arg2, res) */ -void acpigen_write_xor(uint8_t arg1, uint8_t arg2, uint8_t res) -{ - acpigen_emit_byte(XOR_OP); - acpigen_emit_byte(arg1); - acpigen_emit_byte(arg2); - acpigen_emit_byte(res); -} - -/* And (arg1, arg2, res) */ -void acpigen_write_and(uint8_t arg1, uint8_t arg2, uint8_t res) -{ - acpigen_emit_byte(AND_OP); - acpigen_emit_byte(arg1); - acpigen_emit_byte(arg2); - acpigen_emit_byte(res); -} - -/* Not (arg, res) */ -void acpigen_write_not(uint8_t arg, uint8_t res) -{ - acpigen_emit_byte(NOT_OP); - acpigen_emit_byte(arg); - acpigen_emit_byte(res); -} - -/* Store (str, DEBUG) */ -void acpigen_write_debug_string(const char *str) -{ - acpigen_write_store(); - acpigen_write_string(str); - acpigen_emit_ext_op(DEBUG_OP); -} - -/* Store (val, DEBUG) */ -void acpigen_write_debug_integer(uint64_t val) -{ - acpigen_write_store(); - acpigen_write_integer(val); - acpigen_emit_ext_op(DEBUG_OP); -} - -/* Store (op, DEBUG) */ -void acpigen_write_debug_op(uint8_t op) -{ - acpigen_write_store(); - acpigen_emit_byte(op); - acpigen_emit_ext_op(DEBUG_OP); -} - -void acpigen_write_if(void) -{ - acpigen_emit_byte(IF_OP); - acpigen_write_len_f(); -} - -/* If (And (arg1, arg2)) */ -void acpigen_write_if_and(uint8_t arg1, uint8_t arg2) -{ - acpigen_write_if(); - acpigen_emit_byte(AND_OP); - acpigen_emit_byte(arg1); - acpigen_emit_byte(arg2); -} - -/* - * Generates ACPI code for checking if operand1 and operand2 are equal, where, - * operand1 is ACPI op and operand2 is an integer. - * - * If (Lequal (op, val)) - */ -void acpigen_write_if_lequal_op_int(uint8_t op, uint64_t val) -{ - acpigen_write_if(); - acpigen_emit_byte(LEQUAL_OP); - acpigen_emit_byte(op); - acpigen_write_integer(val); -} - -/* - * Generates ACPI code for checking if operand1 and operand2 are equal, where, - * operand1 is namestring and operand2 is an integer. - * - * If (Lequal ("namestr", val)) - */ -void acpigen_write_if_lequal_namestr_int(const char *namestr, uint64_t val) -{ - acpigen_write_if(); - acpigen_emit_byte(LEQUAL_OP); - acpigen_emit_namestring(namestr); - acpigen_write_integer(val); -} - -void acpigen_write_else(void) -{ - acpigen_emit_byte(ELSE_OP); - acpigen_write_len_f(); -} - -void acpigen_write_to_buffer(uint8_t src, uint8_t dst) -{ - acpigen_emit_byte(TO_BUFFER_OP); - acpigen_emit_byte(src); - acpigen_emit_byte(dst); -} - -void acpigen_write_to_integer(uint8_t src, uint8_t dst) -{ - acpigen_emit_byte(TO_INTEGER_OP); - acpigen_emit_byte(src); - acpigen_emit_byte(dst); -} - -void acpigen_write_byte_buffer(uint8_t *arr, size_t size) -{ - size_t i; - - acpigen_emit_byte(BUFFER_OP); - acpigen_write_len_f(); - acpigen_write_integer(size); - - for (i = 0; i < size; i++) - acpigen_emit_byte(arr[i]); - - acpigen_pop_len(); -} - -void acpigen_write_return_byte_buffer(uint8_t *arr, size_t size) -{ - acpigen_emit_byte(RETURN_OP); - acpigen_write_byte_buffer(arr, size); -} - -void acpigen_write_return_singleton_buffer(uint8_t arg) -{ - acpigen_write_return_byte_buffer(&arg, 1); -} - -void acpigen_write_return_byte(uint8_t arg) -{ - acpigen_emit_byte(RETURN_OP); - acpigen_write_byte(arg); -} - -void acpigen_write_return_integer(uint64_t arg) -{ - acpigen_emit_byte(RETURN_OP); - acpigen_write_integer(arg); -} - -void acpigen_write_return_string(const char *arg) -{ - acpigen_emit_byte(RETURN_OP); - acpigen_write_string(arg); -} - -void acpigen_write_upc(enum acpi_upc_type type) -{ - acpigen_write_name("_UPC"); - acpigen_write_package(4); - /* Connectable */ - acpigen_write_byte(type == UPC_TYPE_UNUSED ? 0 : 0xff); - /* Type */ - acpigen_write_byte(type); - /* Reserved0 */ - acpigen_write_zero(); - /* Reserved1 */ - acpigen_write_zero(); - acpigen_pop_len(); -} - -void acpigen_write_pld(const struct acpi_pld *pld) -{ - uint8_t buf[20]; - - if (acpi_pld_to_buffer(pld, buf, ARRAY_SIZE(buf)) < 0) - return; - - acpigen_write_name("_PLD"); - acpigen_write_package(1); - acpigen_write_byte_buffer(buf, ARRAY_SIZE(buf)); - acpigen_pop_len(); -} - -void acpigen_write_dsm(const char *uuid, void (**callbacks)(void *), - size_t count, void *arg) -{ - struct dsm_uuid id = DSM_UUID(uuid, callbacks, count, arg); - acpigen_write_dsm_uuid_arr(&id, 1); -} - -static void acpigen_write_dsm_uuid(struct dsm_uuid *id) -{ - size_t i; - - /* If (LEqual (Local0, ToUUID(uuid))) */ - acpigen_write_if(); - acpigen_emit_byte(LEQUAL_OP); - acpigen_emit_byte(LOCAL0_OP); - acpigen_write_uuid(id->uuid); - - /* ToInteger (Arg2, Local1) */ - acpigen_write_to_integer(ARG2_OP, LOCAL1_OP); - - for (i = 0; i < id->count; i++) { - /* If (LEqual (Local1, i)) */ - acpigen_write_if_lequal_op_int(LOCAL1_OP, i); - - /* Callback to write if handler. */ - if (id->callbacks[i]) - id->callbacks[i](id->arg); - - acpigen_pop_len(); /* If */ - } - - /* Default case: Return (Buffer (One) { 0x0 }) */ - acpigen_write_return_singleton_buffer(0x0); - - acpigen_pop_len(); /* If (LEqual (Local0, ToUUID(uuid))) */ - -} - -/* - * Generate ACPI AML code for _DSM method. - * This function takes as input array of uuid for the device, set of callbacks - * and argument to pass into the callbacks. Callbacks should ensure that Local0 - * and Local1 are left untouched. Use of Local2-Local7 is permitted in - * callbacks. - * - * Arguments passed into _DSM method: - * Arg0 = UUID - * Arg1 = Revision - * Arg2 = Function index - * Arg3 = Function specific arguments - * - * AML code generated would look like: - * Method (_DSM, 4, Serialized) { - * ToBuffer (Arg0, Local0) - * If (LEqual (Local0, ToUUID(uuid))) { - * ToInteger (Arg2, Local1) - * If (LEqual (Local1, 0)) { - * <acpigen by callback[0]> - * } - * ... - * If (LEqual (Local1, n)) { - * <acpigen by callback[n]> - * } - * Return (Buffer (One) { 0x0 }) - * } - * ... - * If (LEqual (Local0, ToUUID(uuidn))) { - * ... - * } - * Return (Buffer (One) { 0x0 }) - * } - */ -void acpigen_write_dsm_uuid_arr(struct dsm_uuid *ids, size_t count) -{ - size_t i; - - /* Method (_DSM, 4, Serialized) */ - acpigen_write_method_serialized("_DSM", 0x4); - - /* ToBuffer (Arg0, Local0) */ - acpigen_write_to_buffer(ARG0_OP, LOCAL0_OP); - - for (i = 0; i < count; i++) - acpigen_write_dsm_uuid(&ids[i]); - - /* Return (Buffer (One) { 0x0 }) */ - acpigen_write_return_singleton_buffer(0x0); - - acpigen_pop_len(); /* Method _DSM */ -} - -#define CPPC_PACKAGE_NAME "\\GCPC" - -void acpigen_write_CPPC_package(const struct cppc_config *config) -{ - u32 i; - u32 max; - switch (config->version) { - case 1: - max = CPPC_MAX_FIELDS_VER_1; - break; - case 2: - max = CPPC_MAX_FIELDS_VER_2; - break; - case 3: - max = CPPC_MAX_FIELDS_VER_3; - break; - default: - printk(BIOS_ERR, "ERROR: CPPC version %u is not implemented\n", - config->version); - return; - } - acpigen_write_name(CPPC_PACKAGE_NAME); - - /* Adding 2 to account for length and version fields */ - acpigen_write_package(max + 2); - acpigen_write_dword(max + 2); - - acpigen_write_byte(config->version); - - for (i = 0; i < max; ++i) { - const acpi_addr_t *reg = &(config->regs[i]); - if (reg->space_id == ACPI_ADDRESS_SPACE_MEMORY && - reg->bit_width == 32 && reg->access_size == 0) { - acpigen_write_dword(reg->addrl); - } else { - acpigen_write_register_resource(reg); - } - } - acpigen_pop_len(); -} - -void acpigen_write_CPPC_method(void) -{ - acpigen_write_method("_CPC", 0); - acpigen_emit_byte(RETURN_OP); - acpigen_emit_namestring(CPPC_PACKAGE_NAME); - acpigen_pop_len(); -} - -/* - * Generate ACPI AML code for _ROM method. - * This function takes as input ROM data and ROM length. - * - * The ACPI spec isn't clear about what should happen at the end of the - * ROM. Tests showed that it shouldn't truncate, but fill the remaining - * bytes in the returned buffer with zeros. - * - * Arguments passed into _DSM method: - * Arg0 = Offset in Bytes - * Arg1 = Bytes to return - * - * Example: - * acpigen_write_rom(0xdeadbeef, 0x10000) - * - * AML code generated would look like: - * Method (_ROM, 2, NotSerialized) { - * - * OperationRegion("ROMS", SYSTEMMEMORY, 0xdeadbeef, 0x10000) - * Field (ROMS, AnyAcc, NoLock, Preserve) - * { - * Offset (0), - * RBF0, 0x80000 - * } - * - * Store (Arg0, Local0) - * Store (Arg1, Local1) - * - * If (LGreater (Local1, 0x1000)) - * { - * Store (0x1000, Local1) - * } - * - * Store (Local1, Local3) - * - * If (LGreater (Local0, 0x10000)) - * { - * Return(Buffer(Local1){0}) - * } - * - * If (LGreater (Local0, 0x0f000)) - * { - * Subtract (0x10000, Local0, Local2) - * If (LGreater (Local1, Local2)) - * { - * Store (Local2, Local1) - * } - * } - * - * Name (ROM1, Buffer (Local3) {0}) - * - * Multiply (Local0, 0x08, Local0) - * Multiply (Local1, 0x08, Local1) - * - * CreateField (RBF0, Local0, Local1, TMPB) - * Store (TMPB, ROM1) - * Return (ROM1) - * } - */ - -void acpigen_write_rom(void *bios, const size_t length) -{ - ASSERT(bios) - ASSERT(length) - - /* Method (_ROM, 2, Serialized) */ - acpigen_write_method_serialized("_ROM", 2); - - /* OperationRegion("ROMS", SYSTEMMEMORY, current, length) */ - struct opregion opreg = OPREGION("ROMS", SYSTEMMEMORY, - (uintptr_t)bios, length); - acpigen_write_opregion(&opreg); - - struct fieldlist l[] = { - FIELDLIST_OFFSET(0), - FIELDLIST_NAMESTR("RBF0", 8 * length), - }; - - /* Field (ROMS, AnyAcc, NoLock, Preserve) - * { - * Offset (0), - * RBF0, 0x80000 - * } */ - acpigen_write_field(opreg.name, l, 2, FIELD_ANYACC | - FIELD_NOLOCK | FIELD_PRESERVE); - - /* Store (Arg0, Local0) */ - acpigen_write_store(); - acpigen_emit_byte(ARG0_OP); - acpigen_emit_byte(LOCAL0_OP); - - /* Store (Arg1, Local1) */ - acpigen_write_store(); - acpigen_emit_byte(ARG1_OP); - acpigen_emit_byte(LOCAL1_OP); - - /* ACPI SPEC requires to return at maximum 4KiB */ - /* If (LGreater (Local1, 0x1000)) */ - acpigen_write_if(); - acpigen_emit_byte(LGREATER_OP); - acpigen_emit_byte(LOCAL1_OP); - acpigen_write_integer(0x1000); - - /* Store (0x1000, Local1) */ - acpigen_write_store(); - acpigen_write_integer(0x1000); - acpigen_emit_byte(LOCAL1_OP); - - /* Pop if */ - acpigen_pop_len(); - - /* Store (Local1, Local3) */ - acpigen_write_store(); - acpigen_emit_byte(LOCAL1_OP); - acpigen_emit_byte(LOCAL3_OP); - - /* If (LGreater (Local0, length)) */ - acpigen_write_if(); - acpigen_emit_byte(LGREATER_OP); - acpigen_emit_byte(LOCAL0_OP); - acpigen_write_integer(length); - - /* Return(Buffer(Local1){0}) */ - acpigen_emit_byte(RETURN_OP); - acpigen_emit_byte(BUFFER_OP); - acpigen_write_len_f(); - acpigen_emit_byte(LOCAL1_OP); - acpigen_emit_byte(0); - acpigen_pop_len(); - - /* Pop if */ - acpigen_pop_len(); - - /* If (LGreater (Local0, length - 4096)) */ - acpigen_write_if(); - acpigen_emit_byte(LGREATER_OP); - acpigen_emit_byte(LOCAL0_OP); - acpigen_write_integer(length - 4096); - - /* Subtract (length, Local0, Local2) */ - acpigen_emit_byte(SUBTRACT_OP); - acpigen_write_integer(length); - acpigen_emit_byte(LOCAL0_OP); - acpigen_emit_byte(LOCAL2_OP); - - /* If (LGreater (Local1, Local2)) */ - acpigen_write_if(); - acpigen_emit_byte(LGREATER_OP); - acpigen_emit_byte(LOCAL1_OP); - acpigen_emit_byte(LOCAL2_OP); - - /* Store (Local2, Local1) */ - acpigen_write_store(); - acpigen_emit_byte(LOCAL2_OP); - acpigen_emit_byte(LOCAL1_OP); - - /* Pop if */ - acpigen_pop_len(); - - /* Pop if */ - acpigen_pop_len(); - - /* Name (ROM1, Buffer (Local3) {0}) */ - acpigen_write_name("ROM1"); - acpigen_emit_byte(BUFFER_OP); - acpigen_write_len_f(); - acpigen_emit_byte(LOCAL3_OP); - acpigen_emit_byte(0); - acpigen_pop_len(); - - /* Multiply (Local1, 0x08, Local1) */ - acpigen_emit_byte(MULTIPLY_OP); - acpigen_emit_byte(LOCAL1_OP); - acpigen_write_integer(0x08); - acpigen_emit_byte(LOCAL1_OP); - - /* Multiply (Local0, 0x08, Local0) */ - acpigen_emit_byte(MULTIPLY_OP); - acpigen_emit_byte(LOCAL0_OP); - acpigen_write_integer(0x08); - acpigen_emit_byte(LOCAL0_OP); - - /* CreateField (RBF0, Local0, Local1, TMPB) */ - acpigen_emit_ext_op(CREATEFIELD_OP); - acpigen_emit_namestring("RBF0"); - acpigen_emit_byte(LOCAL0_OP); - acpigen_emit_byte(LOCAL1_OP); - acpigen_emit_namestring("TMPB"); - - /* Store (TMPB, ROM1) */ - acpigen_write_store(); - acpigen_emit_namestring("TMPB"); - acpigen_emit_namestring("ROM1"); - - /* Return (ROM1) */ - acpigen_emit_byte(RETURN_OP); - acpigen_emit_namestring("ROM1"); - - /* Pop method */ - acpigen_pop_len(); -} - - -/* Soc-implemented functions -- weak definitions. */ -int __weak acpigen_soc_read_rx_gpio(unsigned int gpio_num) -{ - printk(BIOS_ERR, "ERROR: %s not implemented\n", __func__); - acpigen_write_debug_string("read_rx_gpio not available"); - return -1; -} - -int __weak acpigen_soc_get_tx_gpio(unsigned int gpio_num) -{ - printk(BIOS_ERR, "ERROR: %s not implemented\n", __func__); - acpigen_write_debug_string("get_tx_gpio not available"); - return -1; -} - -int __weak acpigen_soc_set_tx_gpio(unsigned int gpio_num) -{ - printk(BIOS_ERR, "ERROR: %s not implemented\n", __func__); - acpigen_write_debug_string("set_tx_gpio not available"); - return -1; -} - -int __weak acpigen_soc_clear_tx_gpio(unsigned int gpio_num) -{ - printk(BIOS_ERR, "ERROR: %s not implemented\n", __func__); - acpigen_write_debug_string("clear_tx_gpio not available"); - return -1; -} - -/* - * Helper functions for enabling/disabling Tx GPIOs based on the GPIO - * polarity. These functions end up calling acpigen_soc_{set,clear}_tx_gpio to - * make callbacks into SoC acpigen code. - * - * Returns 0 on success and -1 on error. - */ -int acpigen_enable_tx_gpio(struct acpi_gpio *gpio) -{ - if (gpio->polarity == ACPI_GPIO_ACTIVE_HIGH) - return acpigen_soc_set_tx_gpio(gpio->pins[0]); - else - return acpigen_soc_clear_tx_gpio(gpio->pins[0]); -} - -int acpigen_disable_tx_gpio(struct acpi_gpio *gpio) -{ - if (gpio->polarity == ACPI_GPIO_ACTIVE_LOW) - return acpigen_soc_set_tx_gpio(gpio->pins[0]); - else - return acpigen_soc_clear_tx_gpio(gpio->pins[0]); -} - -void acpigen_get_rx_gpio(struct acpi_gpio *gpio) -{ - acpigen_soc_read_rx_gpio(gpio->pins[0]); - - if (gpio->polarity == ACPI_GPIO_ACTIVE_LOW) - acpigen_write_xor(LOCAL0_OP, 1, LOCAL0_OP); -} - -/* refer to ACPI 6.4.3.5.3 Word Address Space Descriptor section for details */ -void acpigen_resource_word(u16 res_type, u16 gen_flags, u16 type_flags, u16 gran, - u16 range_min, u16 range_max, u16 translation, u16 length) -{ - acpigen_emit_byte(0x88); - /* Byte 1+2: length (0x000d) */ - acpigen_emit_byte(0x0d); - acpigen_emit_byte(0x00); - /* resource type */ - acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus - /* general flags */ - acpigen_emit_byte(gen_flags); - /* type flags */ - // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details - acpigen_emit_byte(type_flags); - /* granularity, min, max, translation, length */ - acpigen_emit_word(gran); - acpigen_emit_word(range_min); - acpigen_emit_word(range_max); - acpigen_emit_word(translation); - acpigen_emit_word(length); -} - -/* refer to ACPI 6.4.3.5.2 DWord Address Space Descriptor section for details */ -void acpigen_resource_dword(u16 res_type, u16 gen_flags, u16 type_flags, - u32 gran, u32 range_min, u32 range_max, u32 translation, u32 length) -{ - acpigen_emit_byte(0x87); - /* Byte 1+2: length (0023) */ - acpigen_emit_byte(23); - acpigen_emit_byte(0x00); - /* resource type */ - acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus - /* general flags */ - acpigen_emit_byte(gen_flags); - /* type flags */ - // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details - acpigen_emit_byte(type_flags); - /* granularity, min, max, translation, length */ - acpigen_emit_dword(gran); - acpigen_emit_dword(range_min); - acpigen_emit_dword(range_max); - acpigen_emit_dword(translation); - acpigen_emit_dword(length); -} - -static void acpigen_emit_qword(u64 data) -{ - acpigen_emit_dword(data & 0xffffffff); - acpigen_emit_dword((data >> 32) & 0xffffffff); -} - -/* refer to ACPI 6.4.3.5.1 QWord Address Space Descriptor section for details */ -void acpigen_resource_qword(u16 res_type, u16 gen_flags, u16 type_flags, - u64 gran, u64 range_min, u64 range_max, u64 translation, u64 length) -{ - acpigen_emit_byte(0x8a); - /* Byte 1+2: length (0x002b) */ - acpigen_emit_byte(0x2b); - acpigen_emit_byte(0x00); - /* resource type */ - acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus - /* general flags */ - acpigen_emit_byte(gen_flags); - /* type flags */ - // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details - acpigen_emit_byte(type_flags); - /* granularity, min, max, translation, length */ - acpigen_emit_qword(gran); - acpigen_emit_qword(range_min); - acpigen_emit_qword(range_max); - acpigen_emit_qword(translation); - acpigen_emit_qword(length); -} - -void acpigen_write_ADR(uint64_t adr) -{ - acpigen_write_name_qword("_ADR", adr); -} - -void acpigen_write_ADR_pci_devfn(pci_devfn_t devfn) -{ - /* - * _ADR for PCI Bus is encoded as follows: - * [63:32] - unused - * [31:16] - device # - * [15:0] - function # - */ - acpigen_write_ADR(PCI_SLOT(devfn) << 16 | PCI_FUNC(devfn)); -} - -void acpigen_write_ADR_pci_device(const struct device *dev) -{ - assert(dev->path.type == DEVICE_PATH_PCI); - acpigen_write_ADR_pci_devfn(dev->path.pci.devfn); -} |