Software APIs
dt_keymgr.c File Reference

Device Tables (DT) for IP keymgr and top earlgrey. More...

#include "dt/dt_keymgr.h"

Go to the source code of this file.

Data Structures

struct  dt_desc_keymgr
 Description of instances. More...
 

Macros

#define TRY_GET_DT(dt, default)
 Return a pointer to the dt_keymgr_desc_t structure of the requested dt if it's a valid index.
 

Typedefs

typedef struct dt_desc_keymgr dt_desc_keymgr_t
 Description of instances.
 

Functions

dt_keymgr_t dt_keymgr_from_instance_id (dt_instance_id_t inst_id)
 Get the keymgr instance from an instance ID.
 
dt_instance_id_t dt_keymgr_instance_id (dt_keymgr_t dt)
 Get the instance ID of an instance.
 
uint32_t dt_keymgr_reg_block (dt_keymgr_t dt, dt_keymgr_reg_block_t reg_block)
 Get the register base address of an instance.
 
dt_plic_irq_id_t dt_keymgr_irq_to_plic_id (dt_keymgr_t dt, dt_keymgr_irq_t irq)
 Get the PLIC ID of a keymgr IRQ for a given instance.
 
dt_keymgr_irq_t dt_keymgr_irq_from_plic_id (dt_keymgr_t dt, dt_plic_irq_id_t irq)
 Convert a global IRQ ID to a local keymgr IRQ type.
 
dt_alert_id_t dt_keymgr_alert_to_alert_id (dt_keymgr_t dt, dt_keymgr_alert_t alert)
 Get the alert ID of a keymgr alert for a given instance.
 
dt_keymgr_alert_t dt_keymgr_alert_from_alert_id (dt_keymgr_t dt, dt_alert_id_t alert)
 Convert a global alert ID to a local keymgr alert type.
 
dt_clock_t dt_keymgr_clock (dt_keymgr_t dt, dt_keymgr_clock_t clk)
 Get the clock signal connected to a clock port of an instance.
 
dt_reset_t dt_keymgr_reset (dt_keymgr_t dt, dt_keymgr_reset_t rst)
 Get the reset signal connected to a reset port of an instance.
 

Detailed Description

Device Tables (DT) for IP keymgr and top earlgrey.

Definition in file dt_keymgr.c.


Data Structure Documentation

◆ dt_desc_keymgr

struct dt_desc_keymgr

Description of instances.

Definition at line 19 of file dt_keymgr.c.

Data Fields
uint32_t base_addr[kDtKeymgrRegBlockCount] Base address of each register block.
dt_clock_t clock[kDtKeymgrClockCount] Clock signal connected to each clock port.
top_earlgrey_alert_id_t first_alert Alert ID of the first Alert of this instance.

This value is undefined if the block is not connected to the Alert Handler.

top_earlgrey_plic_irq_id_t first_irq PLIC ID of the first IRQ of this instance.

This can be kDtPlicIrqIdNone if the block is not connected to the PLIC.

dt_instance_id_t inst_id Instance ID.
dt_reset_t reset[kDtKeymgrResetCount] Reset signal connected to each reset port.

Macro Definition Documentation

◆ TRY_GET_DT

#define TRY_GET_DT ( dt,
default )
Value:
({ if ((dt) < (dt_keymgr_t)0 || (dt) >= kDtKeymgrCount) return (default); &keymgr_desc[dt]; })

Return a pointer to the dt_keymgr_desc_t structure of the requested dt if it's a valid index.

Otherwise, this macro will return (i.e. exit the function) with the provided default value.

Definition at line 65 of file dt_keymgr.c.

Function Documentation

◆ dt_keymgr_alert_from_alert_id()

dt_keymgr_alert_t dt_keymgr_alert_from_alert_id ( dt_keymgr_t dt,
dt_alert_id_t alert )

Convert a global alert ID to a local keymgr alert type.

Parameters
dtInstance of keymgr.
alertA global alert ID that belongs to this instance.
Returns
The keymgr alert, or kDtKeymgrAlertCount.

Note: This function assumes that the global alert ID belongs to the instance of keymgr passed in parameter. In other words, it must be the case that dt_keymgr_instance_id(dt) == dt_alert_id_to_instance_id(alert). Otherwise, this function will return kDtKeymgrAlertCount.

Definition at line 117 of file dt_keymgr.c.

◆ dt_keymgr_alert_to_alert_id()

dt_alert_id_t dt_keymgr_alert_to_alert_id ( dt_keymgr_t dt,
dt_keymgr_alert_t alert )

Get the alert ID of a keymgr alert for a given instance.

Note: This function only makes sense if the instance is connected to the Alert Handler. For any instances where the instance is not connected, the return value is unspecified.

Parameters
dtInstance of keymgr.
alertA keymgr alert.
Returns
The Alert Handler alert ID of the alert of this instance.

Definition at line 111 of file dt_keymgr.c.

◆ dt_keymgr_clock()

Get the clock signal connected to a clock port of an instance.

Parameters
dtInstance of keymgr.
clkClock port.
Returns
Clock signal.

Definition at line 129 of file dt_keymgr.c.

◆ dt_keymgr_from_instance_id()

dt_keymgr_t dt_keymgr_from_instance_id ( dt_instance_id_t inst_id)

Get the keymgr instance from an instance ID.

For example, dt_uart_from_instance_id(kDtInstanceIdUart3) == kDtUart3.

Parameters
inst_idInstance ID.
Returns
A keymgr instance.

Note: This function only makes sense if the instance ID has device type keymgr, otherwise the returned value is unspecified.

Definition at line 67 of file dt_keymgr.c.

◆ dt_keymgr_instance_id()

dt_instance_id_t dt_keymgr_instance_id ( dt_keymgr_t dt)

Get the instance ID of an instance.

Parameters
dtInstance of keymgr.
Returns
The instance ID of that instance.

Definition at line 74 of file dt_keymgr.c.

◆ dt_keymgr_irq_from_plic_id()

dt_keymgr_irq_t dt_keymgr_irq_from_plic_id ( dt_keymgr_t dt,
dt_plic_irq_id_t irq )

Convert a global IRQ ID to a local keymgr IRQ type.

Parameters
dtInstance of keymgr.
irqA PLIC ID that belongs to this instance.
Returns
The keymgr IRQ, or kDtKeymgrIrqCount.

Note: This function assumes that the PLIC ID belongs to the instance of keymgr passed in parameter. In other words, it must be the case that dt_keymgr_instance_id(dt) == dt_plic_id_to_instance_id(irq). Otherwise, this function will return kDtKeymgrIrqCount.

Definition at line 96 of file dt_keymgr.c.

◆ dt_keymgr_irq_to_plic_id()

dt_plic_irq_id_t dt_keymgr_irq_to_plic_id ( dt_keymgr_t dt,
dt_keymgr_irq_t irq )

Get the PLIC ID of a keymgr IRQ for a given instance.

If the instance is not connected to the PLIC, this function will return kDtPlicIrqIdNone.

Parameters
dtInstance of keymgr.
irqA keymgr IRQ.
Returns
The PLIC ID of the IRQ of this instance.

Definition at line 86 of file dt_keymgr.c.

◆ dt_keymgr_reg_block()

Get the register base address of an instance.

Parameters
dtInstance of keymgr.
reg_blockThe register block requested.
Returns
The register base address of the requested block.

Definition at line 79 of file dt_keymgr.c.

◆ dt_keymgr_reset()

Get the reset signal connected to a reset port of an instance.

Parameters
dtInstance of keymgr.
rstReset port.
Returns
Reset signal.

Definition at line 136 of file dt_keymgr.c.