mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 13:41:51 +00:00
fec2432c9a
The open/reset/close commands format is similar for all objects. Currently there are multiple implementations for these commands scattered through various drivers. The code is cavsi-identical. Create a generic implementation for the open/reset/close commands. One of the consumer will be the VFIO driver which needs to be able to reset a device. Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Link: https://lore.kernel.org/r/20210922110530.24736-1-diana.craciun@oss.nxp.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
/*
|
|
* Copyright 2021 NXP
|
|
*
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/fsl/mc.h>
|
|
|
|
#include "fsl-mc-private.h"
|
|
|
|
static int fsl_mc_get_open_cmd_id(const char *type)
|
|
{
|
|
static const struct {
|
|
int cmd_id;
|
|
const char *type;
|
|
} dev_ids[] = {
|
|
{ DPRTC_CMDID_OPEN, "dprtc" },
|
|
{ DPRC_CMDID_OPEN, "dprc" },
|
|
{ DPNI_CMDID_OPEN, "dpni" },
|
|
{ DPIO_CMDID_OPEN, "dpio" },
|
|
{ DPSW_CMDID_OPEN, "dpsw" },
|
|
{ DPBP_CMDID_OPEN, "dpbp" },
|
|
{ DPCON_CMDID_OPEN, "dpcon" },
|
|
{ DPMCP_CMDID_OPEN, "dpmcp" },
|
|
{ DPMAC_CMDID_OPEN, "dpmac" },
|
|
{ DPSECI_CMDID_OPEN, "dpseci" },
|
|
{ DPDMUX_CMDID_OPEN, "dpdmux" },
|
|
{ DPDCEI_CMDID_OPEN, "dpdcei" },
|
|
{ DPAIOP_CMDID_OPEN, "dpaiop" },
|
|
{ DPCI_CMDID_OPEN, "dpci" },
|
|
{ DPDMAI_CMDID_OPEN, "dpdmai" },
|
|
{ DPDBG_CMDID_OPEN, "dpdbg" },
|
|
{ 0, NULL }
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; dev_ids[i].type; i++)
|
|
if (!strcmp(dev_ids[i].type, type))
|
|
return dev_ids[i].cmd_id;
|
|
|
|
return -1;
|
|
}
|
|
|
|
int fsl_mc_obj_open(struct fsl_mc_io *mc_io,
|
|
u32 cmd_flags,
|
|
int obj_id,
|
|
char *obj_type,
|
|
u16 *token)
|
|
{
|
|
struct fsl_mc_command cmd = { 0 };
|
|
struct fsl_mc_obj_cmd_open *cmd_params;
|
|
int err = 0;
|
|
int cmd_id = fsl_mc_get_open_cmd_id(obj_type);
|
|
|
|
if (cmd_id == -1)
|
|
return -ENODEV;
|
|
|
|
/* prepare command */
|
|
cmd.header = mc_encode_cmd_header(cmd_id, cmd_flags, 0);
|
|
cmd_params = (struct fsl_mc_obj_cmd_open *)cmd.params;
|
|
cmd_params->obj_id = cpu_to_le32(obj_id);
|
|
|
|
/* send command to mc*/
|
|
err = mc_send_command(mc_io, &cmd);
|
|
if (err)
|
|
return err;
|
|
|
|
/* retrieve response parameters */
|
|
*token = mc_cmd_hdr_read_token(&cmd);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(fsl_mc_obj_open);
|
|
|
|
int fsl_mc_obj_close(struct fsl_mc_io *mc_io,
|
|
u32 cmd_flags,
|
|
u16 token)
|
|
{
|
|
struct fsl_mc_command cmd = { 0 };
|
|
|
|
/* prepare command */
|
|
cmd.header = mc_encode_cmd_header(OBJ_CMDID_CLOSE, cmd_flags,
|
|
token);
|
|
|
|
/* send command to mc*/
|
|
return mc_send_command(mc_io, &cmd);
|
|
}
|
|
EXPORT_SYMBOL_GPL(fsl_mc_obj_close);
|
|
|
|
int fsl_mc_obj_reset(struct fsl_mc_io *mc_io,
|
|
u32 cmd_flags,
|
|
u16 token)
|
|
{
|
|
struct fsl_mc_command cmd = { 0 };
|
|
|
|
/* prepare command */
|
|
cmd.header = mc_encode_cmd_header(OBJ_CMDID_RESET, cmd_flags,
|
|
token);
|
|
|
|
/* send command to mc*/
|
|
return mc_send_command(mc_io, &cmd);
|
|
}
|
|
EXPORT_SYMBOL_GPL(fsl_mc_obj_reset);
|