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// SPDX-License-Identifier: GPL-2.0
/*
* GXP debugfs support.
*
* Copyright (C) 2021 Google LLC
*/
#include "gxp.h"
#include "gxp-debug-dump.h"
#include "gxp-debugfs.h"
#include "gxp-firmware.h"
#include "gxp-firmware-data.h"
#include "gxp-internal.h"
#include "gxp-lpm.h"
#include "gxp-mailbox.h"
#include "gxp-vd.h"
static int gxp_debugfs_lpm_test(void *data, u64 val)
{
struct gxp_dev *gxp = (struct gxp_dev *) data;
dev_info(gxp->dev, "%llu\n", val);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(gxp_lpm_test_fops, NULL, gxp_debugfs_lpm_test,
"%llu\n");
static int gxp_debugfs_mailbox(void *data, u64 val)
{
int core;
struct gxp_command cmd;
struct gxp_response resp;
struct gxp_dev *gxp = (struct gxp_dev *)data;
core = val / 1000;
if (core >= GXP_NUM_CORES) {
dev_notice(gxp->dev,
"Mailbox for core %d doesn't exist.\n", core);
return -EINVAL;
}
if (gxp->mailbox_mgr == NULL ||
gxp->mailbox_mgr->mailboxes[core] == NULL) {
dev_notice(gxp->dev,
"Unable to send mailbox command -- mailbox %d not ready\n",
core);
return -EINVAL;
}
cmd.code = (u16) val;
cmd.priority = 0;
cmd.buffer_descriptor.address = 0;
cmd.buffer_descriptor.size = 0;
cmd.buffer_descriptor.flags = 0;
gxp_mailbox_execute_cmd(gxp->mailbox_mgr->mailboxes[core], &cmd, &resp);
dev_info(gxp->dev,
"Mailbox Command Sent: cmd.code=%d, resp.status=%d, resp.retval=%d\n",
cmd.code, resp.status, resp.retval);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(gxp_mailbox_fops, NULL, gxp_debugfs_mailbox, "%llu\n");
static int gxp_debugfs_pingpong(void *data, u64 val)
{
int core;
struct gxp_command cmd;
struct gxp_response resp;
struct gxp_dev *gxp = (struct gxp_dev *)data;
core = val / 1000;
if (core >= GXP_NUM_CORES) {
dev_notice(gxp->dev,
"Mailbox for core %d doesn't exist.\n", core);
return -EINVAL;
}
if (gxp->mailbox_mgr == NULL ||
gxp->mailbox_mgr->mailboxes[core] == NULL) {
dev_notice(
gxp->dev,
"Unable to send mailbox pingpong -- mailbox %d not ready\n",
core);
return -EINVAL;
}
cmd.code = GXP_MBOX_CODE_PINGPONG;
cmd.priority = 0;
cmd.buffer_descriptor.address = 0;
cmd.buffer_descriptor.size = 0;
cmd.buffer_descriptor.flags = (u32) val;
gxp_mailbox_execute_cmd(gxp->mailbox_mgr->mailboxes[core], &cmd, &resp);
dev_info(
gxp->dev,
"Mailbox Pingpong Sent to core %d: val=%d, resp.status=%d, resp.retval=%d\n",
core, cmd.buffer_descriptor.flags, resp.status, resp.retval);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(gxp_pingpong_fops, NULL, gxp_debugfs_pingpong,
"%llu\n");
static int gxp_firmware_run_set(void *data, u64 val)
{
struct gxp_dev *gxp = (struct gxp_dev *) data;
int ret = 0;
if (val) {
if (gxp->debugfs_client) {
dev_err(gxp->dev, "Firmware already running!\n");
return -EIO;
}
/*
* Cleanup any bad state or corruption the device might've
* caused
*/
gxp_fw_data_destroy(gxp);
gxp_fw_data_init(gxp);
gxp->debugfs_client = gxp_client_create(gxp);
if (IS_ERR(gxp->debugfs_client)) {
dev_err(gxp->dev, "Failed to create client\n");
ret = PTR_ERR(gxp->debugfs_client);
gxp->debugfs_client = NULL;
return ret;
}
ret = gxp_vd_allocate(gxp->debugfs_client, GXP_NUM_CORES);
if (ret) {
dev_err(gxp->dev, "Failed to allocate VD\n");
gxp_client_destroy(gxp->debugfs_client);
gxp->debugfs_client = NULL;
return ret;
}
} else {
if (!gxp->debugfs_client) {
dev_err(gxp->dev, "Firmware not running!\n");
return -EIO;
}
gxp_client_destroy(gxp->debugfs_client);
gxp->debugfs_client = NULL;
}
return ret;
}
static int gxp_firmware_run_get(void *data, u64 *val)
{
struct gxp_dev *gxp = (struct gxp_dev *) data;
*val = gxp->firmware_running;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(gxp_firmware_run_fops, gxp_firmware_run_get,
gxp_firmware_run_set, "%llx\n");
static int gxp_blk_powerstate_set(void *data, u64 val)
{
struct gxp_dev *gxp = (struct gxp_dev *)data;
int ret = 0;
if (val >= AUR_DVFS_MIN_STATE) {
ret = gxp_blk_set_state(gxp, val);
} else {
ret = -EINVAL;
dev_err(gxp->dev, "Incorrect state %llu\n", val);
}
return ret;
}
static int gxp_blk_powerstate_get(void *data, u64 *val)
{
struct gxp_dev *gxp = (struct gxp_dev *)data;
*val = gxp_blk_get_state(gxp);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(gxp_blk_powerstate_fops, gxp_blk_powerstate_get,
gxp_blk_powerstate_set, "%llx\n");
static int gxp_debugfs_coredump(void *data, u64 val)
{
return gxp_debugfs_mailbox(data, GXP_MBOX_CODE_COREDUMP);
}
DEFINE_DEBUGFS_ATTRIBUTE(gxp_coredump_fops, NULL, gxp_debugfs_coredump,
"%llu\n");
void gxp_create_debugfs(struct gxp_dev *gxp)
{
gxp->d_entry = debugfs_create_dir("gxp", NULL);
if (IS_ERR_OR_NULL(gxp->d_entry))
return;
debugfs_create_file("lpm_test", 0200, gxp->d_entry, gxp,
&gxp_lpm_test_fops);
debugfs_create_file("mailbox", 0200, gxp->d_entry, gxp,
&gxp_mailbox_fops);
debugfs_create_file("pingpong", 0200, gxp->d_entry, gxp,
&gxp_pingpong_fops);
debugfs_create_file("firmware_run", 0600, gxp->d_entry, gxp,
&gxp_firmware_run_fops);
debugfs_create_file("blk_powerstate", 0600, gxp->d_entry, gxp,
&gxp_blk_powerstate_fops);
debugfs_create_file("coredump", 0200, gxp->d_entry, gxp,
&gxp_coredump_fops);
}
void gxp_remove_debugfs(struct gxp_dev *gxp)
{
if (gxp->debugfs_client)
gxp_client_destroy(gxp->debugfs_client);
debugfs_remove_recursive(gxp->d_entry);
}
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