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arch/x86: add acpigen resource support 

Add Word/DWord/QWord Address Space Descriptor helper functions.

Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Signed-off-by: Reddy Chagam <anjaneya.chagam@intel.com>
Change-Id: I707f8a443090b6f30e2940b721f9555ccdf49d32
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38594
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
This commit is contained in:
Jonathan Zhang 2020-01-27 11:38:57 -08:00 committed by Patrick Georgi
parent ea4d1246e8
commit 71299c274b
2 changed files with 84 additions and 0 deletions
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75
src/arch/x86/acpigen.c
View File

@ -1758,3 +1758,78 @@ int acpigen_disable_tx_gpio(struct acpi_gpio *gpio)
else else
return acpigen_soc_clear_tx_gpio(gpio->pins[0]); return acpigen_soc_clear_tx_gpio(gpio->pins[0]);
} }
/* 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);
}

9
src/arch/x86/include/arch/acpigen.h
View File

@ -472,4 +472,13 @@ int acpigen_soc_clear_tx_gpio(unsigned int gpio_num);
int acpigen_enable_tx_gpio(struct acpi_gpio *gpio); int acpigen_enable_tx_gpio(struct acpi_gpio *gpio);
int acpigen_disable_tx_gpio(struct acpi_gpio *gpio); int acpigen_disable_tx_gpio(struct acpi_gpio *gpio);
/* 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);
/* 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);
/* 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);
#endif #endif