7db16ddc88
Add functions to write ACPI SSDT code for entering and leaving the config mode. To be used by ACPI generators. Tested on Linux 5.2 using the Aspeed SSDT generator. Change-Id: I14b55b885f1c384536bafafed39ad399639868e4 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37639 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
#ifndef DEVICE_PNP_H
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#define DEVICE_PNP_H
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#include <stdint.h>
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#include <device/device.h>
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#include <device/pnp_def.h>
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#include <device/pnp_type.h>
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#include <arch/io.h>
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#if !ENV_PNP_SIMPLE_DEVICE
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/* Primitive PNP resource manipulation */
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void pnp_write_config(struct device *dev, u8 reg, u8 value);
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u8 pnp_read_config(struct device *dev, u8 reg);
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void pnp_set_logical_device(struct device *dev);
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void pnp_set_enable(struct device *dev, int enable);
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int pnp_read_enable(struct device *dev);
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void pnp_set_iobase(struct device *dev, u8 index, u16 iobase);
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void pnp_set_irq(struct device *dev, u8 index, u8 irq);
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void pnp_set_drq(struct device *dev, u8 index, u8 drq);
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#endif
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/* PNP device operations */
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void pnp_read_resources(struct device *dev);
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void pnp_set_resources(struct device *dev);
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void pnp_enable_resources(struct device *dev);
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void pnp_enable(struct device *dev);
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void pnp_alt_enable(struct device *dev);
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extern struct device_operations pnp_ops;
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/* PNP helper operations */
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struct pnp_info {
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struct device_operations *ops; /* LDN-specific ops override */
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#define PNP_SKIP_FUNCTION 0xffff
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u16 function; /* Must be at least 16 bits (virtual LDNs)! */
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unsigned int flags;
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#define PNP_IO0 0x000001
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#define PNP_IO1 0x000002
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#define PNP_IO2 0x000004
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#define PNP_IO3 0x000008
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#define PNP_IRQ0 0x000010
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#define PNP_IRQ1 0x000020
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#define PNP_DRQ0 0x000040
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#define PNP_DRQ1 0x000080
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#define PNP_EN 0x000100
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#define PNP_MSC0 0x000200
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#define PNP_MSC1 0x000400
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#define PNP_MSC2 0x000800
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#define PNP_MSC3 0x001000
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#define PNP_MSC4 0x002000
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#define PNP_MSC5 0x004000
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#define PNP_MSC6 0x008000
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#define PNP_MSC7 0x010000
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#define PNP_MSC8 0x020000
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#define PNP_MSC9 0x040000
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#define PNP_MSCA 0x080000
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#define PNP_MSCB 0x100000
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#define PNP_MSCC 0x200000
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#define PNP_MSCD 0x400000
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#define PNP_MSCE 0x800000
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u16 io0, io1, io2, io3;
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};
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struct resource *pnp_get_resource(struct device *dev, unsigned int index);
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void pnp_enable_devices(struct device *dev, struct device_operations *ops,
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unsigned int functions, struct pnp_info *info);
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struct pnp_mode_ops {
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void (*enter_conf_mode)(struct device *dev);
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void (*exit_conf_mode)(struct device *dev);
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#if CONFIG(HAVE_ACPI_TABLES)
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/*
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* Generates ASL code to enter/exit config mode.
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*
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* @param idx The ACPI name of the SuperIO index port register. eg. 'INDX'.
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* @param data The ACPI name of the SuperIO data port register. eg. 'DATA'.
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*/
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void (*ssdt_enter_conf_mode)(struct device *dev, const char *idx, const char *data);
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void (*ssdt_exit_conf_mode)(struct device *dev, const char *idx, const char *data);
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#endif
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};
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void pnp_enter_conf_mode(struct device *dev);
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void pnp_exit_conf_mode(struct device *dev);
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#if CONFIG(HAVE_ACPI_TABLES)
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/*
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* Generates ASL code to enter/exit config mode if supported.
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* The calling code has to place this within an ASL MethodOP.
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*
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* @param idx The ACPI name of the SuperIO index port register. eg. 'INDX'.
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* @param data The ACPI name of the SuperIO data port register. eg. 'DATA'.
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*/
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void pnp_ssdt_enter_conf_mode(struct device *dev, const char *idx, const char *data);
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void pnp_ssdt_exit_conf_mode(struct device *dev, const char *idx, const char *data);
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#endif
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/* PNP indexed I/O operations */
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/*
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* u8 pnp_read_index(u16 port, u8 reg)
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* Description:
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* This routine reads indexed I/O registers. The reg byte is written
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* to the index register at I/O address = port. The result is then
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* read from the data register at I/O address = port + 1.
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*
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* Parameters:
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* @param[in] u16 port = The I/O address of the port index register.
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* @param[in] u8 reg = The offset within the indexed space.
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* @param[out] u8 result = The value read back from the data register.
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*/
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static inline u8 pnp_read_index(u16 port, u8 reg)
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{
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outb(reg, port);
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return inb(port + 1);
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}
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/*
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* void pnp_write_index(u16 port, u8 reg, u8 value)
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* Description:
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* This routine writes indexed I/O registers. The reg byte is written
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* to the index register at I/O address = port. The value byte is then
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* written to the data register at I/O address = port + 1.
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*
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* Parameters:
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* @param[in] u16 port = The address of the port index register.
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* @param[in] u8 reg = The offset within the indexed space.
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* @param[in] u8 value = The value to be written to the data register.
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*/
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static inline void pnp_write_index(u16 port, u8 reg, u8 value)
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{
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outb(reg, port);
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outb(value, port + 1);
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}
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#endif /* DEVICE_PNP_H */
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