forked from SlimRoms/kernel_oneplus_msm8974
/
slim-msm-ngd.c
1730 lines (1626 loc) · 47.8 KB
/
slim-msm-ngd.c
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/* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/slimbus/slimbus.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/clk.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_slimbus.h>
#include <linux/timer.h>
#include <mach/sps.h>
#include "slim-msm.h"
#define NGD_SLIM_NAME "ngd_msm_ctrl"
#define SLIM_LA_MGR 0xFF
#define SLIM_ROOT_FREQ 24576000
#define LADDR_RETRY 5
#define NGD_BASE_V1(r) (((r) % 2) ? 0x800 : 0xA00)
#define NGD_BASE_V2(r) (((r) % 2) ? 0x1000 : 0x2000)
#define NGD_BASE(r, v) ((v) ? NGD_BASE_V2(r) : NGD_BASE_V1(r))
/* NGD (Non-ported Generic Device) registers */
enum ngd_reg {
NGD_CFG = 0x0,
NGD_STATUS = 0x4,
NGD_RX_MSGQ_CFG = 0x8,
NGD_INT_EN = 0x10,
NGD_INT_STAT = 0x14,
NGD_INT_CLR = 0x18,
NGD_TX_MSG = 0x30,
NGD_RX_MSG = 0x70,
NGD_IE_STAT = 0xF0,
NGD_VE_STAT = 0x100,
};
enum ngd_msg_cfg {
NGD_CFG_ENABLE = 1,
NGD_CFG_RX_MSGQ_EN = 1 << 1,
NGD_CFG_TX_MSGQ_EN = 1 << 2,
};
enum ngd_intr {
NGD_INT_RECFG_DONE = 1 << 24,
NGD_INT_TX_NACKED_2 = 1 << 25,
NGD_INT_MSG_BUF_CONTE = 1 << 26,
NGD_INT_MSG_TX_INVAL = 1 << 27,
NGD_INT_IE_VE_CHG = 1 << 28,
NGD_INT_DEV_ERR = 1 << 29,
NGD_INT_RX_MSG_RCVD = 1 << 30,
NGD_INT_TX_MSG_SENT = 1 << 31,
};
enum ngd_offsets {
NGD_NACKED_MC = 0x7F00000,
NGD_ACKED_MC = 0xFE000,
NGD_ERROR = 0x1800,
NGD_MSGQ_SUPPORT = 0x400,
NGD_RX_MSGQ_TIME_OUT = 0x16,
NGD_ENUMERATED = 0x1,
NGD_TX_BUSY = 0x0,
};
enum ngd_status {
NGD_LADDR = 1 << 1,
};
static int ngd_slim_runtime_resume(struct device *device);
static int ngd_slim_power_up(struct msm_slim_ctrl *dev, bool mdm_restart);
static irqreturn_t ngd_slim_interrupt(int irq, void *d)
{
struct msm_slim_ctrl *dev = (struct msm_slim_ctrl *)d;
void __iomem *ngd = dev->base + NGD_BASE(dev->ctrl.nr, dev->ver);
u32 stat = readl_relaxed(ngd + NGD_INT_STAT);
u32 pstat;
if ((stat & NGD_INT_MSG_BUF_CONTE) ||
(stat & NGD_INT_MSG_TX_INVAL) || (stat & NGD_INT_DEV_ERR) ||
(stat & NGD_INT_TX_NACKED_2)) {
writel_relaxed(stat, ngd + NGD_INT_CLR);
dev->err = -EIO;
SLIM_WARN(dev, "NGD interrupt error:0x%x, err:%d\n", stat,
dev->err);
/* Guarantee that error interrupts are cleared */
mb();
msm_slim_manage_tx_msgq(dev, false, NULL);
} else if (stat & NGD_INT_TX_MSG_SENT) {
writel_relaxed(NGD_INT_TX_MSG_SENT, ngd + NGD_INT_CLR);
/* Make sure interrupt is cleared */
mb();
msm_slim_manage_tx_msgq(dev, false, NULL);
}
if (stat & NGD_INT_RX_MSG_RCVD) {
u32 rx_buf[10];
u8 len, i;
rx_buf[0] = readl_relaxed(ngd + NGD_RX_MSG);
len = rx_buf[0] & 0x1F;
for (i = 1; i < ((len + 3) >> 2); i++) {
rx_buf[i] = readl_relaxed(ngd + NGD_RX_MSG +
(4 * i));
SLIM_DBG(dev, "REG-RX data: %x\n", rx_buf[i]);
}
msm_slim_rx_enqueue(dev, rx_buf, len);
writel_relaxed(NGD_INT_RX_MSG_RCVD,
ngd + NGD_INT_CLR);
/*
* Guarantee that CLR bit write goes through before
* queuing work
*/
mb();
if (dev->use_rx_msgqs == MSM_MSGQ_ENABLED)
SLIM_WARN(dev, "direct msg rcvd with RX MSGQs\n");
else
complete(&dev->rx_msgq_notify);
}
if (stat & NGD_INT_RECFG_DONE) {
writel_relaxed(NGD_INT_RECFG_DONE, ngd + NGD_INT_CLR);
/* Guarantee RECONFIG DONE interrupt is cleared */
mb();
/* In satellite mode, just log the reconfig done IRQ */
SLIM_DBG(dev, "reconfig done IRQ for NGD\n");
}
if (stat & NGD_INT_IE_VE_CHG) {
writel_relaxed(NGD_INT_IE_VE_CHG, ngd + NGD_INT_CLR);
/* Guarantee IE VE change interrupt is cleared */
mb();
SLIM_DBG(dev, "NGD IE VE change\n");
}
pstat = readl_relaxed(PGD_THIS_EE(PGD_PORT_INT_ST_EEn, dev->ver));
if (pstat != 0)
return msm_slim_port_irq_handler(dev, pstat);
return IRQ_HANDLED;
}
static int ngd_qmi_available(struct notifier_block *n, unsigned long code,
void *_cmd)
{
struct msm_slim_qmi *qmi = container_of(n, struct msm_slim_qmi, nb);
struct msm_slim_ctrl *dev =
container_of(qmi, struct msm_slim_ctrl, qmi);
SLIM_INFO(dev, "Slimbus QMI NGD CB received event:%ld\n", code);
switch (code) {
case QMI_SERVER_ARRIVE:
schedule_work(&qmi->ssr_up);
break;
default:
break;
}
return 0;
}
static int dsp_ssr_notify_cb(struct notifier_block *n, unsigned long code,
void *_cmd)
{
struct msm_slim_ss *dsp = container_of(n, struct msm_slim_ss, nb);
struct msm_slim_ctrl *dev = container_of(dsp, struct msm_slim_ctrl,
dsp);
switch (code) {
case SUBSYS_BEFORE_SHUTDOWN:
SLIM_INFO(dev, "SLIM DSP SSR notify cb:%lu\n", code);
/* wait for current transaction */
mutex_lock(&dev->tx_lock);
/* make sure autosuspend is not called until ADSP comes up*/
pm_runtime_get_noresume(dev->dev);
dev->state = MSM_CTRL_DOWN;
/* Reset ctrl_up completion */
init_completion(&dev->ctrl_up);
/* disconnect BAM pipes */
if (dev->use_rx_msgqs == MSM_MSGQ_ENABLED)
dev->use_rx_msgqs = MSM_MSGQ_DOWN;
if (dev->use_tx_msgqs == MSM_MSGQ_ENABLED)
dev->use_tx_msgqs = MSM_MSGQ_DOWN;
msm_slim_sps_exit(dev, false);
schedule_work(&dev->qmi.ssr_down);
mutex_unlock(&dev->tx_lock);
break;
default:
break;
}
return NOTIFY_DONE;
}
static int mdm_ssr_notify_cb(struct notifier_block *n, unsigned long code,
void *_cmd)
{
void __iomem *ngd;
struct msm_slim_ss *ext_mdm = container_of(n, struct msm_slim_ss, nb);
struct msm_slim_ctrl *dev = container_of(ext_mdm, struct msm_slim_ctrl,
ext_mdm);
struct slim_controller *ctrl = &dev->ctrl;
u32 laddr;
struct slim_device *sbdev;
switch (code) {
case SUBSYS_BEFORE_SHUTDOWN:
SLIM_INFO(dev, "SLIM %lu external_modem SSR notify cb\n", code);
/* vote for runtime-pm so that ADSP doesn't go down */
msm_slim_get_ctrl(dev);
/*
* checking framer here will wake-up ADSP and may avoid framer
* handover later
*/
msm_slim_qmi_check_framer_request(dev);
dev->ext_mdm.state = MSM_CTRL_DOWN;
msm_slim_put_ctrl(dev);
break;
case SUBSYS_AFTER_POWERUP:
if (dev->ext_mdm.state != MSM_CTRL_DOWN)
return NOTIFY_DONE;
SLIM_INFO(dev,
"SLIM %lu external_modem SSR notify cb\n", code);
/* vote for runtime-pm so that ADSP doesn't go down */
msm_slim_get_ctrl(dev);
msm_slim_qmi_check_framer_request(dev);
/* If NGD enumeration is lost, we will need to power us up */
ngd = dev->base + NGD_BASE(dev->ctrl.nr, dev->ver);
laddr = readl_relaxed(ngd + NGD_STATUS);
if (!(laddr & NGD_LADDR)) {
mutex_lock(&dev->tx_lock);
/* runtime-pm state should be consistent with HW */
pm_runtime_disable(dev->dev);
pm_runtime_set_suspended(dev->dev);
dev->state = MSM_CTRL_DOWN;
mutex_unlock(&dev->tx_lock);
SLIM_INFO(dev,
"SLIM MDM SSR (active framer on MDM) dev-down\n");
list_for_each_entry(sbdev, &ctrl->devs, dev_list)
slim_report_absent(sbdev);
ngd_slim_runtime_resume(dev->dev);
pm_runtime_set_active(dev->dev);
pm_runtime_enable(dev->dev);
}
dev->ext_mdm.state = MSM_CTRL_AWAKE;
msm_slim_put_ctrl(dev);
break;
default:
break;
}
return NOTIFY_DONE;
}
static int ngd_get_tid(struct slim_controller *ctrl, struct slim_msg_txn *txn,
u8 *tid, struct completion *done)
{
struct msm_slim_ctrl *dev = slim_get_ctrldata(ctrl);
mutex_lock(&ctrl->m_ctrl);
if (ctrl->last_tid <= 255) {
ctrl->txnt = krealloc(ctrl->txnt,
(ctrl->last_tid + 1) *
sizeof(struct slim_msg_txn *),
GFP_KERNEL);
if (!ctrl->txnt) {
mutex_unlock(&ctrl->m_ctrl);
return -ENOMEM;
}
dev->msg_cnt = ctrl->last_tid;
ctrl->last_tid++;
} else {
int i;
for (i = 0; i < 256; i++) {
dev->msg_cnt = ((dev->msg_cnt + 1) & 0xFF);
if (ctrl->txnt[dev->msg_cnt] == NULL)
break;
}
if (i >= 256) {
dev_err(&ctrl->dev, "out of TID");
mutex_unlock(&ctrl->m_ctrl);
return -ENOMEM;
}
}
ctrl->txnt[dev->msg_cnt] = txn;
txn->tid = dev->msg_cnt;
txn->comp = done;
*tid = dev->msg_cnt;
mutex_unlock(&ctrl->m_ctrl);
return 0;
}
static int ngd_xfer_msg(struct slim_controller *ctrl, struct slim_msg_txn *txn)
{
DECLARE_COMPLETION_ONSTACK(done);
DECLARE_COMPLETION_ONSTACK(tx_sent);
struct msm_slim_ctrl *dev = slim_get_ctrldata(ctrl);
u32 *pbuf;
u8 *puc;
int ret = 0;
u8 la = txn->la;
u8 txn_mt;
u16 txn_mc = txn->mc;
u8 wbuf[SLIM_MSGQ_BUF_LEN];
bool report_sat = false;
bool sync_wr = true;
if (txn->mc & SLIM_MSG_CLK_PAUSE_SEQ_FLG)
return -EPROTONOSUPPORT;
if (txn->mt == SLIM_MSG_MT_CORE &&
(txn->mc >= SLIM_MSG_MC_BEGIN_RECONFIGURATION &&
txn->mc <= SLIM_MSG_MC_RECONFIGURE_NOW))
return 0;
if (txn->mc == SLIM_USR_MC_REPORT_SATELLITE &&
txn->mt == SLIM_MSG_MT_SRC_REFERRED_USER)
report_sat = true;
else
mutex_lock(&dev->tx_lock);
if (!report_sat && !pm_runtime_enabled(dev->dev) &&
dev->state == MSM_CTRL_ASLEEP) {
/*
* Counter-part of system-suspend when runtime-pm is not enabled
* This way, resume can be left empty and device will be put in
* active mode only if client requests anything on the bus
* If the state was DOWN, SSR UP notification will take
* care of putting the device in active state.
*/
mutex_unlock(&dev->tx_lock);
ret = ngd_slim_runtime_resume(dev->dev);
if (ret) {
SLIM_ERR(dev, "slim resume failed ret:%d, state:%d",
ret, dev->state);
return -EREMOTEIO;
}
mutex_lock(&dev->tx_lock);
}
/* If txn is tried when controller is down, wait for ADSP to boot */
if (!report_sat) {
if (dev->state == MSM_CTRL_DOWN) {
u8 mc = (u8)txn->mc;
int timeout;
mutex_unlock(&dev->tx_lock);
SLIM_INFO(dev, "ADSP slimbus not up yet\n");
/*
* Messages related to data channel management can't
* wait since they are holding reconfiguration lock.
* clk_pause in resume (which can change state back to
* MSM_CTRL_AWAKE), will need that lock.
* Port disconnection, channel removal calls should pass
* through since there is no activity on the bus and
* those calls are triggered by clients due to
* device_down callback in that situation.
* Returning 0 on the disconnections and
* removals will ensure consistent state of channels,
* ports with the HW
* Remote requests to remove channel/port will be
* returned from the path where they wait on
* acknowledgement from ADSP
*/
if ((txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER) &&
((mc == SLIM_USR_MC_CHAN_CTRL ||
mc == SLIM_USR_MC_DISCONNECT_PORT ||
mc == SLIM_USR_MC_RECONFIG_NOW)))
return -EREMOTEIO;
if ((txn->mt == SLIM_MSG_MT_CORE) &&
((mc == SLIM_MSG_MC_DISCONNECT_PORT ||
mc == SLIM_MSG_MC_NEXT_REMOVE_CHANNEL ||
mc == SLIM_USR_MC_RECONFIG_NOW)))
return 0;
if ((txn->mt == SLIM_MSG_MT_CORE) &&
((mc >= SLIM_MSG_MC_CONNECT_SOURCE &&
mc <= SLIM_MSG_MC_CHANGE_CONTENT) ||
(mc >= SLIM_MSG_MC_BEGIN_RECONFIGURATION &&
mc <= SLIM_MSG_MC_RECONFIGURE_NOW)))
return -EREMOTEIO;
if ((txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER) &&
((mc >= SLIM_USR_MC_DEFINE_CHAN &&
mc < SLIM_USR_MC_DISCONNECT_PORT)))
return -EREMOTEIO;
timeout = wait_for_completion_timeout(&dev->ctrl_up,
HZ);
if (!timeout)
return -ETIMEDOUT;
mutex_lock(&dev->tx_lock);
}
mutex_unlock(&dev->tx_lock);
ret = msm_slim_get_ctrl(dev);
mutex_lock(&dev->tx_lock);
/*
* Runtime-pm's callbacks are not called until runtime-pm's
* error status is cleared
* Setting runtime status to suspended clears the error
* It also makes HW status cosistent with what SW has it here
*/
if ((pm_runtime_enabled(dev->dev) && ret < 0) ||
dev->state == MSM_CTRL_DOWN) {
SLIM_ERR(dev, "slim ctrl vote failed ret:%d, state:%d",
ret, dev->state);
pm_runtime_set_suspended(dev->dev);
mutex_unlock(&dev->tx_lock);
msm_slim_put_ctrl(dev);
return -EREMOTEIO;
}
}
if (txn->mt == SLIM_MSG_MT_CORE &&
(txn->mc == SLIM_MSG_MC_CONNECT_SOURCE ||
txn->mc == SLIM_MSG_MC_CONNECT_SINK ||
txn->mc == SLIM_MSG_MC_DISCONNECT_PORT)) {
int i = 0;
if (txn->mc != SLIM_MSG_MC_DISCONNECT_PORT)
SLIM_INFO(dev,
"Connect port: laddr 0x%x port_num %d chan_num %d\n",
txn->la, txn->wbuf[0], txn->wbuf[1]);
else
SLIM_INFO(dev,
"Disconnect port: laddr 0x%x port_num %d\n",
txn->la, txn->wbuf[0]);
txn->mt = SLIM_MSG_MT_DEST_REFERRED_USER;
if (txn->mc == SLIM_MSG_MC_CONNECT_SOURCE)
txn->mc = SLIM_USR_MC_CONNECT_SRC;
else if (txn->mc == SLIM_MSG_MC_CONNECT_SINK)
txn->mc = SLIM_USR_MC_CONNECT_SINK;
else if (txn->mc == SLIM_MSG_MC_DISCONNECT_PORT)
txn->mc = SLIM_USR_MC_DISCONNECT_PORT;
if (txn->la == SLIM_LA_MGR) {
if (dev->pgdla == SLIM_LA_MGR) {
u8 ea[] = {0, QC_DEVID_PGD, 0, 0, QC_MFGID_MSB,
QC_MFGID_LSB};
ea[2] = (u8)(dev->pdata.eapc & 0xFF);
ea[3] = (u8)((dev->pdata.eapc & 0xFF00) >> 8);
mutex_unlock(&dev->tx_lock);
ret = dev->ctrl.get_laddr(&dev->ctrl, ea, 6,
&dev->pgdla);
SLIM_DBG(dev, "SLIM PGD LA:0x%x, ret:%d\n",
dev->pgdla, ret);
if (ret) {
SLIM_ERR(dev,
"Incorrect SLIM-PGD EAPC:0x%x\n",
dev->pdata.eapc);
return ret;
}
mutex_lock(&dev->tx_lock);
}
txn->la = dev->pgdla;
}
wbuf[i++] = txn->la;
la = SLIM_LA_MGR;
wbuf[i++] = txn->wbuf[0];
if (txn->mc != SLIM_USR_MC_DISCONNECT_PORT)
wbuf[i++] = txn->wbuf[1];
ret = ngd_get_tid(ctrl, txn, &wbuf[i++], &done);
if (ret) {
SLIM_ERR(dev, "TID for connect/disconnect fail:%d\n",
ret);
goto ngd_xfer_err;
}
txn->len = i;
txn->wbuf = wbuf;
txn->rl = txn->len + 4;
}
txn->rl--;
if (txn->mt == SLIM_MSG_MT_CORE && txn->comp &&
dev->use_tx_msgqs == MSM_MSGQ_ENABLED &&
(txn_mc != SLIM_MSG_MC_REQUEST_INFORMATION &&
txn_mc != SLIM_MSG_MC_REQUEST_VALUE &&
txn_mc != SLIM_MSG_MC_REQUEST_CHANGE_VALUE &&
txn_mc != SLIM_MSG_MC_REQUEST_CLEAR_INFORMATION)) {
sync_wr = false;
pbuf = msm_get_msg_buf(dev, txn->rl, txn->comp);
} else if (txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER &&
dev->use_tx_msgqs == MSM_MSGQ_ENABLED &&
txn->mc == SLIM_USR_MC_REPEAT_CHANGE_VALUE &&
txn->comp) {
sync_wr = false;
pbuf = msm_get_msg_buf(dev, txn->rl, txn->comp);
} else {
pbuf = msm_get_msg_buf(dev, txn->rl, &tx_sent);
}
if (!pbuf) {
SLIM_ERR(dev, "Message buffer unavailable\n");
ret = -ENOMEM;
goto ngd_xfer_err;
}
dev->err = 0;
if (txn->dt == SLIM_MSG_DEST_ENUMADDR) {
ret = -EPROTONOSUPPORT;
goto ngd_xfer_err;
}
if (txn->dt == SLIM_MSG_DEST_LOGICALADDR)
*pbuf = SLIM_MSG_ASM_FIRST_WORD(txn->rl, txn->mt, txn->mc, 0,
la);
else
*pbuf = SLIM_MSG_ASM_FIRST_WORD(txn->rl, txn->mt, txn->mc, 1,
la);
if (txn->dt == SLIM_MSG_DEST_LOGICALADDR)
puc = ((u8 *)pbuf) + 3;
else
puc = ((u8 *)pbuf) + 2;
if (txn->rbuf)
*(puc++) = txn->tid;
if (((txn->mt == SLIM_MSG_MT_CORE) &&
((txn->mc >= SLIM_MSG_MC_REQUEST_INFORMATION &&
txn->mc <= SLIM_MSG_MC_REPORT_INFORMATION) ||
(txn->mc >= SLIM_MSG_MC_REQUEST_VALUE &&
txn->mc <= SLIM_MSG_MC_CHANGE_VALUE))) ||
(txn->mc == SLIM_USR_MC_REPEAT_CHANGE_VALUE &&
txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER)) {
*(puc++) = (txn->ec & 0xFF);
*(puc++) = (txn->ec >> 8)&0xFF;
}
if (txn->wbuf)
memcpy(puc, txn->wbuf, txn->len);
if (txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER &&
(txn->mc == SLIM_USR_MC_CONNECT_SRC ||
txn->mc == SLIM_USR_MC_CONNECT_SINK ||
txn->mc == SLIM_USR_MC_DISCONNECT_PORT) && txn->wbuf &&
wbuf[0] == dev->pgdla) {
if (txn->mc != SLIM_USR_MC_DISCONNECT_PORT)
dev->err = msm_slim_connect_pipe_port(dev, wbuf[1]);
else {
/*
* Remove channel disconnects master-side ports from
* channel. No need to send that again on the bus
* Only disable port
*/
writel_relaxed(0, PGD_PORT(PGD_PORT_CFGn,
(wbuf[1] + dev->port_b), dev->ver));
mutex_unlock(&dev->tx_lock);
msm_slim_put_ctrl(dev);
return 0;
}
if (dev->err) {
SLIM_ERR(dev, "pipe-port connect err:%d\n", dev->err);
goto ngd_xfer_err;
}
/* Add port-base to port number if this is manager side port */
puc[1] += dev->port_b;
}
dev->err = 0;
/*
* If it's a read txn, it may be freed if a response is received by
* received thread before reaching end of this function.
* mc, mt may have changed to convert standard slimbus code/type to
* satellite user-defined message. Reinitialize again
*/
txn_mc = txn->mc;
txn_mt = txn->mt;
ret = msm_send_msg_buf(dev, pbuf, txn->rl,
NGD_BASE(dev->ctrl.nr, dev->ver) + NGD_TX_MSG);
if (!ret && sync_wr) {
int timeout = wait_for_completion_timeout(&tx_sent, HZ);
if (!timeout) {
ret = -ETIMEDOUT;
/*
* disconnect/recoonect pipe so that subsequent
* transactions don't timeout due to unavailable
* descriptors
*/
if (dev->state != MSM_CTRL_DOWN) {
msm_slim_disconnect_endp(dev, &dev->tx_msgq,
&dev->use_tx_msgqs);
msm_slim_connect_endp(dev, &dev->tx_msgq, NULL);
}
} else {
ret = dev->err;
}
}
if (ret) {
u32 conf, stat, rx_msgq, int_stat, int_en, int_clr;
void __iomem *ngd = dev->base + NGD_BASE(dev->ctrl.nr,
dev->ver);
SLIM_WARN(dev, "TX failed :MC:0x%x,mt:0x%x, ret:%d, ver:%d\n",
txn_mc, txn_mt, ret, dev->ver);
conf = readl_relaxed(ngd);
stat = readl_relaxed(ngd + NGD_STATUS);
rx_msgq = readl_relaxed(ngd + NGD_RX_MSGQ_CFG);
int_stat = readl_relaxed(ngd + NGD_INT_STAT);
int_en = readl_relaxed(ngd + NGD_INT_EN);
int_clr = readl_relaxed(ngd + NGD_INT_CLR);
SLIM_WARN(dev, "conf:0x%x,stat:0x%x,rxmsgq:0x%x\n",
conf, stat, rx_msgq);
SLIM_WARN(dev, "int_stat:0x%x,int_en:0x%x,int_cll:0x%x\n",
int_stat, int_en, int_clr);
} else if (txn_mt == SLIM_MSG_MT_DEST_REFERRED_USER &&
(txn_mc == SLIM_USR_MC_CONNECT_SRC ||
txn_mc == SLIM_USR_MC_CONNECT_SINK ||
txn_mc == SLIM_USR_MC_DISCONNECT_PORT)) {
int timeout;
mutex_unlock(&dev->tx_lock);
msm_slim_put_ctrl(dev);
timeout = wait_for_completion_timeout(txn->comp, HZ);
if (!timeout)
ret = -ETIMEDOUT;
else
ret = txn->ec;
if (ret) {
SLIM_INFO(dev,
"connect/disconnect:0x%x,tid:%d err:%d\n",
txn->mc, txn->tid, ret);
mutex_lock(&ctrl->m_ctrl);
ctrl->txnt[txn->tid] = NULL;
mutex_unlock(&ctrl->m_ctrl);
}
return ret ? ret : dev->err;
}
ngd_xfer_err:
if (!report_sat) {
mutex_unlock(&dev->tx_lock);
msm_slim_put_ctrl(dev);
}
return ret ? ret : dev->err;
}
static int ngd_user_msg(struct slim_controller *ctrl, u8 la, u8 mt, u8 mc,
struct slim_ele_access *msg, u8 *buf, u8 len)
{
struct slim_msg_txn txn;
if (mt != SLIM_MSG_MT_DEST_REFERRED_USER ||
mc != SLIM_USR_MC_REPEAT_CHANGE_VALUE) {
return -EPROTONOSUPPORT;
}
if (len > SLIM_MAX_VE_SLC_BYTES ||
msg->start_offset > MSM_SLIM_VE_MAX_MAP_ADDR)
return -EINVAL;
if (len <= 4) {
txn.ec = len - 1;
} else if (len <= 8) {
if (len & 0x1)
return -EINVAL;
txn.ec = ((len >> 1) + 1);
} else {
if (len & 0x3)
return -EINVAL;
txn.ec = ((len >> 2) + 3);
}
txn.ec |= (0x8 | ((msg->start_offset & 0xF) << 4));
txn.ec |= ((msg->start_offset & 0xFF0) << 4);
txn.la = la;
txn.mt = mt;
txn.mc = mc;
txn.dt = SLIM_MSG_DEST_LOGICALADDR;
txn.len = len;
txn.rl = len + 6;
txn.wbuf = buf;
txn.rbuf = NULL;
txn.comp = msg->comp;
return ngd_xfer_msg(ctrl, &txn);
}
static int ngd_xferandwait_ack(struct slim_controller *ctrl,
struct slim_msg_txn *txn)
{
struct msm_slim_ctrl *dev = slim_get_ctrldata(ctrl);
int ret = ngd_xfer_msg(ctrl, txn);
if (!ret) {
int timeout;
timeout = wait_for_completion_timeout(txn->comp, HZ);
if (!timeout)
ret = -ETIMEDOUT;
else
ret = txn->ec;
}
if (ret) {
if (ret != -EREMOTEIO || txn->mc != SLIM_USR_MC_CHAN_CTRL)
SLIM_ERR(dev, "master msg:0x%x,tid:%d ret:%d\n",
txn->mc, txn->tid, ret);
mutex_lock(&ctrl->m_ctrl);
ctrl->txnt[txn->tid] = NULL;
mutex_unlock(&ctrl->m_ctrl);
}
return ret;
}
static int ngd_allocbw(struct slim_device *sb, int *subfrmc, int *clkgear)
{
int ret = 0, num_chan = 0;
struct slim_pending_ch *pch;
struct slim_msg_txn txn;
struct slim_controller *ctrl = sb->ctrl;
DECLARE_COMPLETION_ONSTACK(done);
u8 wbuf[SLIM_MSGQ_BUF_LEN];
struct msm_slim_ctrl *dev = slim_get_ctrldata(ctrl);
*clkgear = ctrl->clkgear;
*subfrmc = 0;
txn.mt = SLIM_MSG_MT_DEST_REFERRED_USER;
txn.dt = SLIM_MSG_DEST_LOGICALADDR;
txn.la = SLIM_LA_MGR;
txn.len = 0;
txn.ec = 0;
txn.wbuf = wbuf;
txn.rbuf = NULL;
if (ctrl->sched.msgsl != ctrl->sched.pending_msgsl) {
SLIM_DBG(dev, "slim reserve BW for messaging: req: %d\n",
ctrl->sched.pending_msgsl);
txn.mc = SLIM_USR_MC_REQ_BW;
wbuf[txn.len++] = ((sb->laddr & 0x1f) |
((u8)(ctrl->sched.pending_msgsl & 0x7) << 5));
wbuf[txn.len++] = (u8)(ctrl->sched.pending_msgsl >> 3);
ret = ngd_get_tid(ctrl, &txn, &wbuf[txn.len++], &done);
if (ret)
return ret;
txn.rl = txn.len + 4;
ret = ngd_xferandwait_ack(ctrl, &txn);
if (ret)
return ret;
txn.mc = SLIM_USR_MC_RECONFIG_NOW;
txn.len = 2;
wbuf[1] = sb->laddr;
txn.rl = txn.len + 4;
ret = ngd_get_tid(ctrl, &txn, &wbuf[0], &done);
if (ret)
return ret;
ret = ngd_xferandwait_ack(ctrl, &txn);
if (ret)
return ret;
txn.len = 0;
}
list_for_each_entry(pch, &sb->mark_define, pending) {
struct slim_ich *slc;
slc = &ctrl->chans[pch->chan];
if (!slc) {
SLIM_WARN(dev, "no channel in define?\n");
return -ENXIO;
}
if (txn.len == 0) {
/* Per protocol, only last 5 bits for client no. */
wbuf[txn.len++] = (u8) (slc->prop.dataf << 5) |
(sb->laddr & 0x1f);
wbuf[txn.len] = slc->seglen;
if (slc->coeff == SLIM_COEFF_3)
wbuf[txn.len] |= 1 << 5;
wbuf[txn.len++] |= slc->prop.auxf << 6;
wbuf[txn.len++] = slc->rootexp << 4 | slc->prop.prot;
wbuf[txn.len++] = slc->prrate;
ret = ngd_get_tid(ctrl, &txn, &wbuf[txn.len++], &done);
if (ret) {
SLIM_WARN(dev, "no tid for channel define?\n");
return -ENXIO;
}
}
num_chan++;
wbuf[txn.len++] = slc->chan;
SLIM_INFO(dev, "slim activate chan:%d, laddr: 0x%x\n",
slc->chan, sb->laddr);
}
if (txn.len) {
txn.mc = SLIM_USR_MC_DEF_ACT_CHAN;
txn.rl = txn.len + 4;
ret = ngd_xferandwait_ack(ctrl, &txn);
if (ret)
return ret;
txn.mc = SLIM_USR_MC_RECONFIG_NOW;
txn.len = 2;
wbuf[1] = sb->laddr;
txn.rl = txn.len + 4;
ret = ngd_get_tid(ctrl, &txn, &wbuf[0], &done);
if (ret)
return ret;
ret = ngd_xferandwait_ack(ctrl, &txn);
if (ret)
return ret;
}
txn.len = 0;
list_for_each_entry(pch, &sb->mark_removal, pending) {
struct slim_ich *slc;
slc = &ctrl->chans[pch->chan];
if (!slc) {
SLIM_WARN(dev, "no channel in removal?\n");
return -ENXIO;
}
if (txn.len == 0) {
/* Per protocol, only last 5 bits for client no. */
wbuf[txn.len++] = (u8) (SLIM_CH_REMOVE << 6) |
(sb->laddr & 0x1f);
ret = ngd_get_tid(ctrl, &txn, &wbuf[txn.len++], &done);
if (ret) {
SLIM_WARN(dev, "no tid for channel define?\n");
return -ENXIO;
}
}
wbuf[txn.len++] = slc->chan;
SLIM_INFO(dev, "slim remove chan:%d, laddr: 0x%x\n",
slc->chan, sb->laddr);
}
if (txn.len) {
txn.mc = SLIM_USR_MC_CHAN_CTRL;
txn.rl = txn.len + 4;
ret = ngd_xferandwait_ack(ctrl, &txn);
/* HW restarting, channel removal should succeed */
if (ret == -EREMOTEIO)
return 0;
else if (ret)
return ret;
txn.mc = SLIM_USR_MC_RECONFIG_NOW;
txn.len = 2;
wbuf[1] = sb->laddr;
txn.rl = txn.len + 4;
ret = ngd_get_tid(ctrl, &txn, &wbuf[0], &done);
if (ret)
return ret;
ret = ngd_xferandwait_ack(ctrl, &txn);
if (ret)
return ret;
txn.len = 0;
}
return 0;
}
static int ngd_set_laddr(struct slim_controller *ctrl, const u8 *ea,
u8 elen, u8 laddr)
{
return 0;
}
static int ngd_get_laddr(struct slim_controller *ctrl, const u8 *ea,
u8 elen, u8 *laddr)
{
int ret;
u8 wbuf[10];
struct slim_msg_txn txn;
DECLARE_COMPLETION_ONSTACK(done);
txn.mt = SLIM_MSG_MT_DEST_REFERRED_USER;
txn.dt = SLIM_MSG_DEST_LOGICALADDR;
txn.la = SLIM_LA_MGR;
txn.ec = 0;
ret = ngd_get_tid(ctrl, &txn, &wbuf[0], &done);
if (ret) {
return ret;
}
memcpy(&wbuf[1], ea, elen);
txn.mc = SLIM_USR_MC_ADDR_QUERY;
txn.rl = 11;
txn.len = 7;
txn.wbuf = wbuf;
txn.rbuf = NULL;
ret = ngd_xferandwait_ack(ctrl, &txn);
if (!ret && txn.la == 0xFF)
ret = -ENXIO;
else if (!ret)
*laddr = txn.la;
return ret;
}
static void ngd_slim_setup_msg_path(struct msm_slim_ctrl *dev)
{
if (dev->state == MSM_CTRL_DOWN) {
msm_slim_sps_init(dev, dev->bam_mem,
NGD_BASE(dev->ctrl.nr,
dev->ver) + NGD_STATUS, true);
} else {
if (dev->use_rx_msgqs == MSM_MSGQ_DISABLED)
goto setup_tx_msg_path;
msm_slim_connect_endp(dev, &dev->rx_msgq,
&dev->rx_msgq_notify);
setup_tx_msg_path:
if (dev->use_tx_msgqs == MSM_MSGQ_DISABLED)
return;
msm_slim_connect_endp(dev, &dev->tx_msgq,
NULL);
}
}
static void ngd_slim_rx(struct msm_slim_ctrl *dev, u8 *buf)
{
u8 mc, mt, len;
int ret;
u32 msgq_en = 1;
len = buf[0] & 0x1F;
mt = (buf[0] >> 5) & 0x7;
mc = buf[1];
if (mc == SLIM_USR_MC_MASTER_CAPABILITY &&
mt == SLIM_MSG_MT_SRC_REFERRED_USER) {
struct slim_msg_txn txn;
int retries = 0;
u8 wbuf[8];
txn.dt = SLIM_MSG_DEST_LOGICALADDR;
txn.ec = 0;
txn.rbuf = NULL;
txn.mc = SLIM_USR_MC_REPORT_SATELLITE;
txn.mt = SLIM_MSG_MT_SRC_REFERRED_USER;
txn.la = SLIM_LA_MGR;
wbuf[0] = SAT_MAGIC_LSB;
wbuf[1] = SAT_MAGIC_MSB;
wbuf[2] = SAT_MSG_VER;
wbuf[3] = SAT_MSG_PROT;
txn.wbuf = wbuf;
txn.len = 4;
SLIM_INFO(dev, "SLIM SAT: Rcvd master capability\n");
if (dev->state >= MSM_CTRL_ASLEEP) {
ngd_slim_setup_msg_path(dev);
if (dev->use_rx_msgqs == MSM_MSGQ_ENABLED)
msgq_en |= NGD_CFG_RX_MSGQ_EN;
if (dev->use_tx_msgqs == MSM_MSGQ_ENABLED)
msgq_en |= NGD_CFG_TX_MSGQ_EN;
writel_relaxed(msgq_en, dev->base +
NGD_BASE(dev->ctrl.nr, dev->ver));
/* make sure NGD MSG-Q config goes through */
mb();
}
capability_retry:
txn.rl = 8;
ret = ngd_xfer_msg(&dev->ctrl, &txn);
if (!ret) {
enum msm_ctrl_state prev_state = dev->state;
SLIM_INFO(dev,
"SLIM SAT: capability exchange successful\n");
if (prev_state >= MSM_CTRL_ASLEEP)
complete(&dev->reconf);
else
SLIM_ERR(dev,
"SLIM: unexpected capability, state:%d\n",
prev_state);
/* ADSP SSR, send device_up notifications */
if (prev_state == MSM_CTRL_DOWN)
complete(&dev->qmi.slave_notify);
} else if (ret == -EIO) {
SLIM_WARN(dev, "capability message NACKed, retrying\n");
if (retries < INIT_MX_RETRIES) {
msleep(DEF_RETRY_MS);
retries++;
goto capability_retry;
}
}
}
if (mc == SLIM_MSG_MC_REPLY_INFORMATION ||
mc == SLIM_MSG_MC_REPLY_VALUE) {
u8 tid = buf[3];
dev_dbg(dev->dev, "tid:%d, len:%d\n", tid, len);
slim_msg_response(&dev->ctrl, &buf[4], tid,
len - 4);
pm_runtime_mark_last_busy(dev->dev);
}
if (mc == SLIM_USR_MC_ADDR_REPLY &&
mt == SLIM_MSG_MT_SRC_REFERRED_USER) {
struct slim_msg_txn *txn;
u8 failed_ea[6] = {0, 0, 0, 0, 0, 0};
mutex_lock(&dev->ctrl.m_ctrl);
txn = dev->ctrl.txnt[buf[3]];
if (!txn) {
SLIM_WARN(dev,
"LADDR response after timeout, tid:0x%x\n",
buf[3]);
mutex_unlock(&dev->ctrl.m_ctrl);
return;
}
if (memcmp(&buf[4], failed_ea, 6))
txn->la = buf[10];
dev->ctrl.txnt[buf[3]] = NULL;
mutex_unlock(&dev->ctrl.m_ctrl);
complete(txn->comp);
}
if (mc == SLIM_USR_MC_GENERIC_ACK &&
mt == SLIM_MSG_MT_SRC_REFERRED_USER) {
struct slim_msg_txn *txn;
mutex_lock(&dev->ctrl.m_ctrl);
txn = dev->ctrl.txnt[buf[3]];
if (!txn) {
SLIM_WARN(dev, "ACK received after timeout, tid:0x%x\n",
buf[3]);
mutex_unlock(&dev->ctrl.m_ctrl);
return;
}
dev_dbg(dev->dev, "got response:tid:%d, response:0x%x",
(int)buf[3], buf[4]);
if (!(buf[4] & MSM_SAT_SUCCSS)) {
SLIM_WARN(dev, "TID:%d, NACK code:0x%x\n", (int)buf[3],
buf[4]);
txn->ec = -EIO;
}