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Software APIs
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Software APIs
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Device Tables (DT) for IP dma and top darjeeling. More...
#include "dt/dt_dma.h"Go to the source code of this file.
Data Structures | |
| struct | dt_desc_dma |
| Description of instances. More... | |
Macros | |
| #define | TRY_GET_DT(dt, default) |
Return a pointer to the dt_dma_desc_t structure of the requested dt if it's a valid index. | |
Typedefs | |
| typedef struct dt_desc_dma | dt_desc_dma_t |
| Description of instances. | |
Functions | |
| dt_dma_t | dt_dma_from_instance_id (dt_instance_id_t inst_id) |
| Get the dma instance from an instance ID. | |
| dt_instance_id_t | dt_dma_instance_id (dt_dma_t dt) |
| Get the instance ID of an instance. | |
| uint32_t | dt_dma_reg_block (dt_dma_t dt, dt_dma_reg_block_t reg_block) |
| Get the register base address of an instance. | |
| dt_plic_irq_id_t | dt_dma_irq_to_plic_id (dt_dma_t dt, dt_dma_irq_t irq) |
| Get the PLIC ID of a dma IRQ for a given instance. | |
| dt_dma_irq_t | dt_dma_irq_from_plic_id (dt_dma_t dt, dt_plic_irq_id_t irq) |
| Convert a global IRQ ID to a local dma IRQ type. | |
| dt_alert_id_t | dt_dma_alert_to_alert_id (dt_dma_t dt, dt_dma_alert_t alert) |
| Get the alert ID of a dma alert for a given instance. | |
| dt_dma_alert_t | dt_dma_alert_from_alert_id (dt_dma_t dt, dt_alert_id_t alert) |
| Convert a global alert ID to a local dma alert type. | |
| dt_clock_t | dt_dma_clock (dt_dma_t dt, dt_dma_clock_t clk) |
| Get the clock signal connected to a clock port of an instance. | |
| dt_reset_t | dt_dma_reset (dt_dma_t dt, dt_dma_reset_t rst) |
| Get the reset signal connected to a reset port of an instance. | |
Device Tables (DT) for IP dma and top darjeeling.
Definition in file dt_dma.c.
| struct dt_desc_dma |
| Data Fields | ||
|---|---|---|
| uint32_t | base_addr[kDtDmaRegBlockCount] | Base address of each register block. |
| dt_clock_t | clock[kDtDmaClockCount] | Clock signal connected to each clock port. |
| top_darjeeling_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_darjeeling_plic_irq_id_t | first_irq |
PLIC ID of the first IRQ of this instance. This can be |
| dt_instance_id_t | inst_id | Instance ID. |
| dt_reset_t | reset[kDtDmaResetCount] | Reset signal connected to each reset port. |
| #define TRY_GET_DT | ( | dt, | |
| default ) |
Return a pointer to the dt_dma_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.
| dt_dma_alert_t dt_dma_alert_from_alert_id | ( | dt_dma_t | dt, |
| dt_alert_id_t | alert ) |
Convert a global alert ID to a local dma alert type.
| dt | Instance of dma. |
| alert | A global alert ID that belongs to this instance. |
kDtDmaAlertCount.Note: This function assumes that the global alert ID belongs to the instance of dma passed in parameter. In other words, it must be the case that dt_dma_instance_id(dt) == dt_alert_id_to_instance_id(alert). Otherwise, this function will return kDtDmaAlertCount.
| dt_alert_id_t dt_dma_alert_to_alert_id | ( | dt_dma_t | dt, |
| dt_dma_alert_t | alert ) |
Get the alert ID of a dma 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.
| dt | Instance of dma. |
| alert | A dma alert. |
| dt_clock_t dt_dma_clock | ( | dt_dma_t | dt, |
| dt_dma_clock_t | clk ) |
| dt_dma_t dt_dma_from_instance_id | ( | dt_instance_id_t | inst_id | ) |
Get the dma instance from an instance ID.
For example, dt_uart_from_instance_id(kDtInstanceIdUart3) == kDtUart3.
| inst_id | Instance ID. |
Note: This function only makes sense if the instance ID has device type dma, otherwise the returned value is unspecified.
| dt_instance_id_t dt_dma_instance_id | ( | dt_dma_t | dt | ) |
| dt_dma_irq_t dt_dma_irq_from_plic_id | ( | dt_dma_t | dt, |
| dt_plic_irq_id_t | irq ) |
Convert a global IRQ ID to a local dma IRQ type.
| dt | Instance of dma. |
| irq | A PLIC ID that belongs to this instance. |
kDtDmaIrqCount.Note: This function assumes that the PLIC ID belongs to the instance of dma passed in parameter. In other words, it must be the case that dt_dma_instance_id(dt) == dt_plic_id_to_instance_id(irq). Otherwise, this function will return kDtDmaIrqCount.
| dt_plic_irq_id_t dt_dma_irq_to_plic_id | ( | dt_dma_t | dt, |
| dt_dma_irq_t | irq ) |
| uint32_t dt_dma_reg_block | ( | dt_dma_t | dt, |
| dt_dma_reg_block_t | reg_block ) |
| dt_reset_t dt_dma_reset | ( | dt_dma_t | dt, |
| dt_dma_reset_t | rst ) |