drivers/net/ethernet/freescale/dpaa2/dprtc.c
Source file repositories/reference/linux-study-clean/drivers/net/ethernet/freescale/dpaa2/dprtc.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/net/ethernet/freescale/dpaa2/dprtc.c- Extension
.c- Size
- 8167 bytes
- Lines
- 294
- Domain
- Driver Families
- Bucket
- drivers/net
- Inferred role
- Driver Families: implementation source
- Status
- source implementation candidate
Why This File Exists
Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/fsl/mc.hdprtc.hdprtc-cmd.h
Detected Declarations
function dprtc_openfunction dprtc_closefunction dprtc_set_irq_enablefunction dprtc_get_irq_enablefunction dprtc_set_irq_maskfunction dprtc_get_irq_maskfunction dprtc_get_irq_statusfunction dprtc_clear_irq_status
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2013-2016 Freescale Semiconductor Inc.
* Copyright 2016-2018 NXP
*/
#include <linux/fsl/mc.h>
#include "dprtc.h"
#include "dprtc-cmd.h"
/**
* dprtc_open() - Open a control session for the specified object.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @dprtc_id: DPRTC unique ID
* @token: Returned token; use in subsequent API calls
*
* This function can be used to open a control session for an
* already created object; an object may have been declared in
* the DPL or by calling the dprtc_create function.
* This function returns a unique authentication token,
* associated with the specific object ID and the specific MC
* portal; this token must be used in all subsequent commands for
* this specific object
*
* Return: '0' on Success; Error code otherwise.
*/
int dprtc_open(struct fsl_mc_io *mc_io,
u32 cmd_flags,
int dprtc_id,
u16 *token)
{
struct dprtc_cmd_open *cmd_params;
struct fsl_mc_command cmd = { 0 };
int err;
cmd.header = mc_encode_cmd_header(DPRTC_CMDID_OPEN,
cmd_flags,
0);
cmd_params = (struct dprtc_cmd_open *)cmd.params;
cmd_params->dprtc_id = cpu_to_le32(dprtc_id);
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
*token = mc_cmd_hdr_read_token(&cmd);
return 0;
}
/**
* dprtc_close() - Close the control session of the object
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPRTC object
*
* After this function is called, no further operations are
* allowed on the object without opening a new control session.
*
* Return: '0' on Success; Error code otherwise.
*/
int dprtc_close(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct fsl_mc_command cmd = { 0 };
cmd.header = mc_encode_cmd_header(DPRTC_CMDID_CLOSE, cmd_flags,
token);
return mc_send_command(mc_io, &cmd);
}
/**
* dprtc_set_irq_enable() - Set overall interrupt state.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPRTC object
* @irq_index: The interrupt index to configure
* @en: Interrupt state - enable = 1, disable = 0
*
* Allows GPP software to control when interrupts are generated.
* Each interrupt can have up to 32 causes. The enable/disable control's the
* overall interrupt state. if the interrupt is disabled no causes will cause
* an interrupt.
*
* Return: '0' on Success; Error code otherwise.
*/
Annotation
- Immediate include surface: `linux/fsl/mc.h`, `dprtc.h`, `dprtc-cmd.h`.
- Detected declarations: `function dprtc_open`, `function dprtc_close`, `function dprtc_set_irq_enable`, `function dprtc_get_irq_enable`, `function dprtc_set_irq_mask`, `function dprtc_get_irq_mask`, `function dprtc_get_irq_status`, `function dprtc_clear_irq_status`.
- Atlas domain: Driver Families / drivers/net.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.