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linux_old1/drivers/media/pci/cx18/cx18-mailbox.c

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/*
* cx18 mailbox functions
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
* Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
#include <stdarg.h>
#include "cx18-driver.h"
#include "cx18-io.h"
#include "cx18-scb.h"
#include "cx18-irq.h"
#include "cx18-mailbox.h"
#include "cx18-queue.h"
#include "cx18-streams.h"
#include "cx18-alsa-pcm.h" /* FIXME make configurable */
static const char *rpu_str[] = { "APU", "CPU", "EPU", "HPU" };
#define API_FAST (1 << 2) /* Short timeout */
#define API_SLOW (1 << 3) /* Additional 300ms timeout */
struct cx18_api_info {
u32 cmd;
u8 flags; /* Flags, see above */
u8 rpu; /* Processing unit */
const char *name; /* The name of the command */
};
#define API_ENTRY(rpu, x, f) { (x), (f), (rpu), #x }
static const struct cx18_api_info api_info[] = {
/* MPEG encoder API */
API_ENTRY(CPU, CX18_CPU_SET_CHANNEL_TYPE, 0),
API_ENTRY(CPU, CX18_EPU_DEBUG, 0),
API_ENTRY(CPU, CX18_CREATE_TASK, 0),
API_ENTRY(CPU, CX18_DESTROY_TASK, 0),
API_ENTRY(CPU, CX18_CPU_CAPTURE_START, API_SLOW),
API_ENTRY(CPU, CX18_CPU_CAPTURE_STOP, API_SLOW),
API_ENTRY(CPU, CX18_CPU_CAPTURE_PAUSE, 0),
API_ENTRY(CPU, CX18_CPU_CAPTURE_RESUME, 0),
API_ENTRY(CPU, CX18_CPU_SET_CHANNEL_TYPE, 0),
API_ENTRY(CPU, CX18_CPU_SET_STREAM_OUTPUT_TYPE, 0),
API_ENTRY(CPU, CX18_CPU_SET_VIDEO_IN, 0),
API_ENTRY(CPU, CX18_CPU_SET_VIDEO_RATE, 0),
API_ENTRY(CPU, CX18_CPU_SET_VIDEO_RESOLUTION, 0),
API_ENTRY(CPU, CX18_CPU_SET_FILTER_PARAM, 0),
API_ENTRY(CPU, CX18_CPU_SET_SPATIAL_FILTER_TYPE, 0),
API_ENTRY(CPU, CX18_CPU_SET_MEDIAN_CORING, 0),
API_ENTRY(CPU, CX18_CPU_SET_INDEXTABLE, 0),
API_ENTRY(CPU, CX18_CPU_SET_AUDIO_PARAMETERS, 0),
API_ENTRY(CPU, CX18_CPU_SET_VIDEO_MUTE, 0),
API_ENTRY(CPU, CX18_CPU_SET_AUDIO_MUTE, 0),
API_ENTRY(CPU, CX18_CPU_SET_MISC_PARAMETERS, 0),
API_ENTRY(CPU, CX18_CPU_SET_RAW_VBI_PARAM, API_SLOW),
API_ENTRY(CPU, CX18_CPU_SET_CAPTURE_LINE_NO, 0),
API_ENTRY(CPU, CX18_CPU_SET_COPYRIGHT, 0),
API_ENTRY(CPU, CX18_CPU_SET_AUDIO_PID, 0),
API_ENTRY(CPU, CX18_CPU_SET_VIDEO_PID, 0),
API_ENTRY(CPU, CX18_CPU_SET_VER_CROP_LINE, 0),
API_ENTRY(CPU, CX18_CPU_SET_GOP_STRUCTURE, 0),
API_ENTRY(CPU, CX18_CPU_SET_SCENE_CHANGE_DETECTION, 0),
API_ENTRY(CPU, CX18_CPU_SET_ASPECT_RATIO, 0),
API_ENTRY(CPU, CX18_CPU_SET_SKIP_INPUT_FRAME, 0),
API_ENTRY(CPU, CX18_CPU_SET_SLICED_VBI_PARAM, 0),
API_ENTRY(CPU, CX18_CPU_SET_USERDATA_PLACE_HOLDER, 0),
API_ENTRY(CPU, CX18_CPU_GET_ENC_PTS, 0),
API_ENTRY(CPU, CX18_CPU_SET_VFC_PARAM, 0),
API_ENTRY(CPU, CX18_CPU_DE_SET_MDL_ACK, 0),
API_ENTRY(CPU, CX18_CPU_DE_SET_MDL, API_FAST),
API_ENTRY(CPU, CX18_CPU_DE_RELEASE_MDL, API_SLOW),
API_ENTRY(APU, CX18_APU_START, 0),
API_ENTRY(APU, CX18_APU_STOP, 0),
API_ENTRY(APU, CX18_APU_RESETAI, 0),
API_ENTRY(CPU, CX18_CPU_DEBUG_PEEK32, 0),
API_ENTRY(0, 0, 0),
};
static const struct cx18_api_info *find_api_info(u32 cmd)
{
int i;
for (i = 0; api_info[i].cmd; i++)
if (api_info[i].cmd == cmd)
return &api_info[i];
return NULL;
}
/* Call with buf of n*11+1 bytes */
static char *u32arr2hex(u32 data[], int n, char *buf)
{
char *p;
int i;
for (i = 0, p = buf; i < n; i++, p += 11) {
/* kernel snprintf() appends '\0' always */
snprintf(p, 12, " %#010x", data[i]);
}
*p = '\0';
return buf;
}
static void dump_mb(struct cx18 *cx, struct cx18_mailbox *mb, char *name)
{
char argstr[MAX_MB_ARGUMENTS*11+1];
if (!(cx18_debug & CX18_DBGFLG_API))
return;
CX18_DEBUG_API("%s: req %#010x ack %#010x cmd %#010x err %#010x args%s"
"\n", name, mb->request, mb->ack, mb->cmd, mb->error,
u32arr2hex(mb->args, MAX_MB_ARGUMENTS, argstr));
}
/*
* Functions that run in a work_queue work handling context
*/
static void cx18_mdl_send_to_dvb(struct cx18_stream *s, struct cx18_mdl *mdl)
{
struct cx18_buffer *buf;
if (s->dvb == NULL || !s->dvb->enabled || mdl->bytesused == 0)
return;
/* We ignore mdl and buf readpos accounting here - it doesn't matter */
/* The likely case */
if (list_is_singular(&mdl->buf_list)) {
buf = list_first_entry(&mdl->buf_list, struct cx18_buffer,
list);
if (buf->bytesused)
dvb_dmx_swfilter(&s->dvb->demux,
buf->buf, buf->bytesused);
return;
}
list_for_each_entry(buf, &mdl->buf_list, list) {
if (buf->bytesused == 0)
break;
dvb_dmx_swfilter(&s->dvb->demux, buf->buf, buf->bytesused);
}
}
static void cx18_mdl_send_to_videobuf(struct cx18_stream *s,
struct cx18_mdl *mdl)
{
struct cx18_videobuf_buffer *vb_buf;
struct cx18_buffer *buf;
u8 *p;
u32 offset = 0;
int dispatch = 0;
if (mdl->bytesused == 0)
return;
/* Acquire a videobuf buffer, clone to and and release it */
spin_lock(&s->vb_lock);
if (list_empty(&s->vb_capture))
goto out;
vb_buf = list_first_entry(&s->vb_capture, struct cx18_videobuf_buffer,
vb.queue);
p = videobuf_to_vmalloc(&vb_buf->vb);
if (!p)
goto out;
offset = vb_buf->bytes_used;
list_for_each_entry(buf, &mdl->buf_list, list) {
if (buf->bytesused == 0)
break;
if ((offset + buf->bytesused) <= vb_buf->vb.bsize) {
memcpy(p + offset, buf->buf, buf->bytesused);
offset += buf->bytesused;
vb_buf->bytes_used += buf->bytesused;
}
}
/* If we've filled the buffer as per the callers res then dispatch it */
if (vb_buf->bytes_used >= s->vb_bytes_per_frame) {
dispatch = 1;
vb_buf->bytes_used = 0;
}
if (dispatch) {
vb_buf->vb.ts = ktime_to_timeval(ktime_get());
list_del(&vb_buf->vb.queue);
vb_buf->vb.state = VIDEOBUF_DONE;
wake_up(&vb_buf->vb.done);
}
mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
out:
spin_unlock(&s->vb_lock);
}
static void cx18_mdl_send_to_alsa(struct cx18 *cx, struct cx18_stream *s,
struct cx18_mdl *mdl)
{
struct cx18_buffer *buf;
if (mdl->bytesused == 0)
return;
/* We ignore mdl and buf readpos accounting here - it doesn't matter */
/* The likely case */
if (list_is_singular(&mdl->buf_list)) {
buf = list_first_entry(&mdl->buf_list, struct cx18_buffer,
list);
if (buf->bytesused)
cx->pcm_announce_callback(cx->alsa, buf->buf,
buf->bytesused);
return;
}
list_for_each_entry(buf, &mdl->buf_list, list) {
if (buf->bytesused == 0)
break;
cx->pcm_announce_callback(cx->alsa, buf->buf, buf->bytesused);
}
}
static void epu_dma_done(struct cx18 *cx, struct cx18_in_work_order *order)
{
u32 handle, mdl_ack_count, id;
struct cx18_mailbox *mb;
struct cx18_mdl_ack *mdl_ack;
struct cx18_stream *s;
struct cx18_mdl *mdl;
int i;
mb = &order->mb;
handle = mb->args[0];
s = cx18_handle_to_stream(cx, handle);
if (s == NULL) {
CX18_WARN("Got DMA done notification for unknown/inactive"
" handle %d, %s mailbox seq no %d\n", handle,
(order->flags & CX18_F_EWO_MB_STALE_UPON_RECEIPT) ?
"stale" : "good", mb->request);
return;
}
mdl_ack_count = mb->args[2];
mdl_ack = order->mdl_ack;
for (i = 0; i < mdl_ack_count; i++, mdl_ack++) {
id = mdl_ack->id;
/*
* Simple integrity check for processing a stale (and possibly
* inconsistent mailbox): make sure the MDL id is in the
* valid range for the stream.
*
* We go through the trouble of dealing with stale mailboxes
* because most of the time, the mailbox data is still valid and
* unchanged (and in practice the firmware ping-pongs the
* two mdl_ack buffers so mdl_acks are not stale).
*
* There are occasions when we get a half changed mailbox,
* which this check catches for a handle & id mismatch. If the
* handle and id do correspond, the worst case is that we
* completely lost the old MDL, but pick up the new MDL
* early (but the new mdl_ack is guaranteed to be good in this
* case as the firmware wouldn't point us to a new mdl_ack until
* it's filled in).
*
* cx18_queue_get_mdl() will detect the lost MDLs
* and send them back to q_free for fw rotation eventually.
*/
if ((order->flags & CX18_F_EWO_MB_STALE_UPON_RECEIPT) &&
!(id >= s->mdl_base_idx &&
id < (s->mdl_base_idx + s->buffers))) {
CX18_WARN("Fell behind! Ignoring stale mailbox with "
" inconsistent data. Lost MDL for mailbox "
"seq no %d\n", mb->request);
break;
}
mdl = cx18_queue_get_mdl(s, id, mdl_ack->data_used);
CX18_DEBUG_HI_DMA("DMA DONE for %s (MDL %d)\n", s->name, id);
if (mdl == NULL) {
CX18_WARN("Could not find MDL %d for stream %s\n",
id, s->name);
continue;
}
CX18_DEBUG_HI_DMA("%s recv bytesused = %d\n",
s->name, mdl->bytesused);
if (s->type == CX18_ENC_STREAM_TYPE_TS) {
cx18_mdl_send_to_dvb(s, mdl);
cx18_enqueue(s, mdl, &s->q_free);
} else if (s->type == CX18_ENC_STREAM_TYPE_PCM) {
/* Pass the data to cx18-alsa */
if (cx->pcm_announce_callback != NULL) {
cx18_mdl_send_to_alsa(cx, s, mdl);
cx18_enqueue(s, mdl, &s->q_free);
} else {
cx18_enqueue(s, mdl, &s->q_full);
}
} else if (s->type == CX18_ENC_STREAM_TYPE_YUV) {
cx18_mdl_send_to_videobuf(s, mdl);
cx18_enqueue(s, mdl, &s->q_free);
} else {
cx18_enqueue(s, mdl, &s->q_full);
if (s->type == CX18_ENC_STREAM_TYPE_IDX)
cx18_stream_rotate_idx_mdls(cx);
}
}
/* Put as many MDLs as possible back into fw use */
cx18_stream_load_fw_queue(s);
wake_up(&cx->dma_waitq);
if (s->id != -1)
wake_up(&s->waitq);
}
static void epu_debug(struct cx18 *cx, struct cx18_in_work_order *order)
{
char *p;
char *str = order->str;
CX18_DEBUG_INFO("%x %s\n", order->mb.args[0], str);
p = strchr(str, '.');
if (!test_bit(CX18_F_I_LOADED_FW, &cx->i_flags) && p && p > str)
CX18_INFO("FW version: %s\n", p - 1);
}
static void epu_cmd(struct cx18 *cx, struct cx18_in_work_order *order)
{
switch (order->rpu) {
case CPU:
{
switch (order->mb.cmd) {
case CX18_EPU_DMA_DONE:
epu_dma_done(cx, order);
break;
case CX18_EPU_DEBUG:
epu_debug(cx, order);
break;
default:
CX18_WARN("Unknown CPU to EPU mailbox command %#0x\n",
order->mb.cmd);
break;
}
break;
}
case APU:
CX18_WARN("Unknown APU to EPU mailbox command %#0x\n",
order->mb.cmd);
break;
default:
break;
}
}
static
void free_in_work_order(struct cx18 *cx, struct cx18_in_work_order *order)
{
atomic_set(&order->pending, 0);
}
void cx18_in_work_handler(struct work_struct *work)
{
struct cx18_in_work_order *order =
container_of(work, struct cx18_in_work_order, work);
struct cx18 *cx = order->cx;
epu_cmd(cx, order);
free_in_work_order(cx, order);
}
/*
* Functions that run in an interrupt handling context
*/
static void mb_ack_irq(struct cx18 *cx, struct cx18_in_work_order *order)
{
struct cx18_mailbox __iomem *ack_mb;
u32 ack_irq, req;
switch (order->rpu) {
case APU:
ack_irq = IRQ_EPU_TO_APU_ACK;
ack_mb = &cx->scb->apu2epu_mb;
break;
case CPU:
ack_irq = IRQ_EPU_TO_CPU_ACK;
ack_mb = &cx->scb->cpu2epu_mb;
break;
default:
CX18_WARN("Unhandled RPU (%d) for command %x ack\n",
order->rpu, order->mb.cmd);
return;
}
req = order->mb.request;
/* Don't ack if the RPU has gotten impatient and timed us out */
if (req != cx18_readl(cx, &ack_mb->request) ||
req == cx18_readl(cx, &ack_mb->ack)) {
CX18_DEBUG_WARN("Possibly falling behind: %s self-ack'ed our "
"incoming %s to EPU mailbox (sequence no. %u) "
"while processing\n",
rpu_str[order->rpu], rpu_str[order->rpu], req);
order->flags |= CX18_F_EWO_MB_STALE_WHILE_PROC;
return;
}
cx18_writel(cx, req, &ack_mb->ack);
cx18_write_reg_expect(cx, ack_irq, SW2_INT_SET, ack_irq, ack_irq);
return;
}
static int epu_dma_done_irq(struct cx18 *cx, struct cx18_in_work_order *order)
{
u32 handle, mdl_ack_offset, mdl_ack_count;
struct cx18_mailbox *mb;
int i;
mb = &order->mb;
handle = mb->args[0];
mdl_ack_offset = mb->args[1];
mdl_ack_count = mb->args[2];
if (handle == CX18_INVALID_TASK_HANDLE ||
mdl_ack_count == 0 || mdl_ack_count > CX18_MAX_MDL_ACKS) {
if ((order->flags & CX18_F_EWO_MB_STALE) == 0)
mb_ack_irq(cx, order);
return -1;
}
for (i = 0; i < sizeof(struct cx18_mdl_ack) * mdl_ack_count; i += sizeof(u32))
((u32 *)order->mdl_ack)[i / sizeof(u32)] =
cx18_readl(cx, cx->enc_mem + mdl_ack_offset + i);
if ((order->flags & CX18_F_EWO_MB_STALE) == 0)
mb_ack_irq(cx, order);
return 1;
}
static
int epu_debug_irq(struct cx18 *cx, struct cx18_in_work_order *order)
{
u32 str_offset;
char *str = order->str;
str[0] = '\0';
str_offset = order->mb.args[1];
if (str_offset) {
cx18_setup_page(cx, str_offset);
cx18_memcpy_fromio(cx, str, cx->enc_mem + str_offset, 252);
str[252] = '\0';
cx18_setup_page(cx, SCB_OFFSET);
}
if ((order->flags & CX18_F_EWO_MB_STALE) == 0)
mb_ack_irq(cx, order);
return str_offset ? 1 : 0;
}
static inline
int epu_cmd_irq(struct cx18 *cx, struct cx18_in_work_order *order)
{
int ret = -1;
switch (order->rpu) {
case CPU:
{
switch (order->mb.cmd) {
case CX18_EPU_DMA_DONE:
ret = epu_dma_done_irq(cx, order);
break;
case CX18_EPU_DEBUG:
ret = epu_debug_irq(cx, order);
break;
default:
CX18_WARN("Unknown CPU to EPU mailbox command %#0x\n",
order->mb.cmd);
break;
}
break;
}
case APU:
CX18_WARN("Unknown APU to EPU mailbox command %#0x\n",
order->mb.cmd);
break;
default:
break;
}
return ret;
}
static inline
struct cx18_in_work_order *alloc_in_work_order_irq(struct cx18 *cx)
{
int i;
struct cx18_in_work_order *order = NULL;
for (i = 0; i < CX18_MAX_IN_WORK_ORDERS; i++) {
/*
* We only need "pending" atomic to inspect its contents,
* and need not do a check and set because:
* 1. Any work handler thread only clears "pending" and only
* on one, particular work order at a time, per handler thread.
* 2. "pending" is only set here, and we're serialized because
* we're called in an IRQ handler context.
*/
if (atomic_read(&cx->in_work_order[i].pending) == 0) {
order = &cx->in_work_order[i];
atomic_set(&order->pending, 1);
break;
}
}
return order;
}
void cx18_api_epu_cmd_irq(struct cx18 *cx, int rpu)
{
struct cx18_mailbox __iomem *mb;
struct cx18_mailbox *order_mb;
struct cx18_in_work_order *order;
int submit;
int i;
switch (rpu) {
case CPU:
mb = &cx->scb->cpu2epu_mb;
break;
case APU:
mb = &cx->scb->apu2epu_mb;
break;
default:
return;
}
order = alloc_in_work_order_irq(cx);
if (order == NULL) {
CX18_WARN("Unable to find blank work order form to schedule "
"incoming mailbox command processing\n");
return;
}
order->flags = 0;
order->rpu = rpu;
order_mb = &order->mb;
/* mb->cmd and mb->args[0] through mb->args[2] */
for (i = 0; i < 4; i++)
(&order_mb->cmd)[i] = cx18_readl(cx, &mb->cmd + i);
/* mb->request and mb->ack. N.B. we want to read mb->ack last */
for (i = 0; i < 2; i++)
(&order_mb->request)[i] = cx18_readl(cx, &mb->request + i);
if (order_mb->request == order_mb->ack) {
CX18_DEBUG_WARN("Possibly falling behind: %s self-ack'ed our "
"incoming %s to EPU mailbox (sequence no. %u)"
"\n",
rpu_str[rpu], rpu_str[rpu], order_mb->request);
if (cx18_debug & CX18_DBGFLG_WARN)
dump_mb(cx, order_mb, "incoming");
order->flags = CX18_F_EWO_MB_STALE_UPON_RECEIPT;
}
/*
* Individual EPU command processing is responsible for ack-ing
* a non-stale mailbox as soon as possible
*/
submit = epu_cmd_irq(cx, order);
if (submit > 0) {
queue_work(cx->in_work_queue, &order->work);
}
}
/*
* Functions called from a non-interrupt, non work_queue context
*/
static int cx18_api_call(struct cx18 *cx, u32 cmd, int args, u32 data[])
{
const struct cx18_api_info *info = find_api_info(cmd);
u32 irq, req, ack, err;
struct cx18_mailbox __iomem *mb;
wait_queue_head_t *waitq;
struct mutex *mb_lock;
unsigned long int t0, timeout, ret;
int i;
char argstr[MAX_MB_ARGUMENTS*11+1];
DEFINE_WAIT(w);
if (info == NULL) {
CX18_WARN("unknown cmd %x\n", cmd);
return -EINVAL;
}
if (cx18_debug & CX18_DBGFLG_API) { /* only call u32arr2hex if needed */
if (cmd == CX18_CPU_DE_SET_MDL) {
if (cx18_debug & CX18_DBGFLG_HIGHVOL)
CX18_DEBUG_HI_API("%s\tcmd %#010x args%s\n",
info->name, cmd,
u32arr2hex(data, args, argstr));
} else
CX18_DEBUG_API("%s\tcmd %#010x args%s\n",
info->name, cmd,
u32arr2hex(data, args, argstr));
}
switch (info->rpu) {
case APU:
waitq = &cx->mb_apu_waitq;
mb_lock = &cx->epu2apu_mb_lock;
irq = IRQ_EPU_TO_APU;
mb = &cx->scb->epu2apu_mb;
break;
case CPU:
waitq = &cx->mb_cpu_waitq;
mb_lock = &cx->epu2cpu_mb_lock;
irq = IRQ_EPU_TO_CPU;
mb = &cx->scb->epu2cpu_mb;
break;
default:
CX18_WARN("Unknown RPU (%d) for API call\n", info->rpu);
return -EINVAL;
}
mutex_lock(mb_lock);
/*
* Wait for an in-use mailbox to complete
*
* If the XPU is responding with Ack's, the mailbox shouldn't be in
* a busy state, since we serialize access to it on our end.
*
* If the wait for ack after sending a previous command was interrupted
* by a signal, we may get here and find a busy mailbox. After waiting,
* mark it "not busy" from our end, if the XPU hasn't ack'ed it still.
*/
req = cx18_readl(cx, &mb->request);
timeout = msecs_to_jiffies(10);
ret = wait_event_timeout(*waitq,
(ack = cx18_readl(cx, &mb->ack)) == req,
timeout);
if (req != ack) {
/* waited long enough, make the mbox "not busy" from our end */
cx18_writel(cx, req, &mb->ack);
CX18_ERR("mbox was found stuck busy when setting up for %s; "
"clearing busy and trying to proceed\n", info->name);
} else if (ret != timeout)
CX18_DEBUG_API("waited %u msecs for busy mbox to be acked\n",
jiffies_to_msecs(timeout-ret));
/* Build the outgoing mailbox */
req = ((req & 0xfffffffe) == 0xfffffffe) ? 1 : req + 1;
cx18_writel(cx, cmd, &mb->cmd);
for (i = 0; i < args; i++)
cx18_writel(cx, data[i], &mb->args[i]);
cx18_writel(cx, 0, &mb->error);
cx18_writel(cx, req, &mb->request);
cx18_writel(cx, req - 1, &mb->ack); /* ensure ack & req are distinct */
/*
* Notify the XPU and wait for it to send an Ack back
*/
timeout = msecs_to_jiffies((info->flags & API_FAST) ? 10 : 20);
CX18_DEBUG_HI_IRQ("sending interrupt SW1: %x to send %s\n",
irq, info->name);
/* So we don't miss the wakeup, prepare to wait before notifying fw */
prepare_to_wait(waitq, &w, TASK_UNINTERRUPTIBLE);
cx18_write_reg_expect(cx, irq, SW1_INT_SET, irq, irq);
t0 = jiffies;
ack = cx18_readl(cx, &mb->ack);
if (ack != req) {
schedule_timeout(timeout);
ret = jiffies - t0;
ack = cx18_readl(cx, &mb->ack);
} else {
ret = jiffies - t0;
}
finish_wait(waitq, &w);
if (req != ack) {
mutex_unlock(mb_lock);
if (ret >= timeout) {
/* Timed out */
CX18_DEBUG_WARN("sending %s timed out waiting %d msecs "
"for RPU acknowledgement\n",
info->name, jiffies_to_msecs(ret));
} else {
CX18_DEBUG_WARN("woken up before mailbox ack was ready "
"after submitting %s to RPU. only "
"waited %d msecs on req %u but awakened"
" with unmatched ack %u\n",
info->name,
jiffies_to_msecs(ret),
req, ack);
}
return -EINVAL;
}
if (ret >= timeout)
CX18_DEBUG_WARN("failed to be awakened upon RPU acknowledgment "
"sending %s; timed out waiting %d msecs\n",
info->name, jiffies_to_msecs(ret));
else
CX18_DEBUG_HI_API("waited %u msecs for %s to be acked\n",
jiffies_to_msecs(ret), info->name);
/* Collect data returned by the XPU */
for (i = 0; i < MAX_MB_ARGUMENTS; i++)
data[i] = cx18_readl(cx, &mb->args[i]);
err = cx18_readl(cx, &mb->error);
mutex_unlock(mb_lock);
/*
* Wait for XPU to perform extra actions for the caller in some cases.
* e.g. CX18_CPU_DE_RELEASE_MDL will cause the CPU to send all MDLs
* back in a burst shortly thereafter
*/
if (info->flags & API_SLOW)
cx18_msleep_timeout(300, 0);
if (err)
CX18_DEBUG_API("mailbox error %08x for command %s\n", err,
info->name);
return err ? -EIO : 0;
}
int cx18_api(struct cx18 *cx, u32 cmd, int args, u32 data[])
{
return cx18_api_call(cx, cmd, args, data);
}
static int cx18_set_filter_param(struct cx18_stream *s)
{
struct cx18 *cx = s->cx;
u32 mode;
int ret;
mode = (cx->filter_mode & 1) ? 2 : (cx->spatial_strength ? 1 : 0);
ret = cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
s->handle, 1, mode, cx->spatial_strength);
mode = (cx->filter_mode & 2) ? 2 : (cx->temporal_strength ? 1 : 0);
ret = ret ? ret : cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
s->handle, 0, mode, cx->temporal_strength);
ret = ret ? ret : cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
s->handle, 2, cx->filter_mode >> 2, 0);
return ret;
}
int cx18_api_func(void *priv, u32 cmd, int in, int out,
u32 data[CX2341X_MBOX_MAX_DATA])
{
struct cx18_stream *s = priv;
struct cx18 *cx = s->cx;
switch (cmd) {
case CX2341X_ENC_SET_OUTPUT_PORT:
return 0;
case CX2341X_ENC_SET_FRAME_RATE:
return cx18_vapi(cx, CX18_CPU_SET_VIDEO_IN, 6,
s->handle, 0, 0, 0, 0, data[0]);
case CX2341X_ENC_SET_FRAME_SIZE:
return cx18_vapi(cx, CX18_CPU_SET_VIDEO_RESOLUTION, 3,
s->handle, data[1], data[0]);
case CX2341X_ENC_SET_STREAM_TYPE:
return cx18_vapi(cx, CX18_CPU_SET_STREAM_OUTPUT_TYPE, 2,
s->handle, data[0]);
case CX2341X_ENC_SET_ASPECT_RATIO:
return cx18_vapi(cx, CX18_CPU_SET_ASPECT_RATIO, 2,
s->handle, data[0]);
case CX2341X_ENC_SET_GOP_PROPERTIES:
return cx18_vapi(cx, CX18_CPU_SET_GOP_STRUCTURE, 3,
s->handle, data[0], data[1]);
case CX2341X_ENC_SET_GOP_CLOSURE:
return 0;
case CX2341X_ENC_SET_AUDIO_PROPERTIES:
return cx18_vapi(cx, CX18_CPU_SET_AUDIO_PARAMETERS, 2,
s->handle, data[0]);
case CX2341X_ENC_MUTE_AUDIO:
return cx18_vapi(cx, CX18_CPU_SET_AUDIO_MUTE, 2,
s->handle, data[0]);
case CX2341X_ENC_SET_BIT_RATE:
return cx18_vapi(cx, CX18_CPU_SET_VIDEO_RATE, 5,
s->handle, data[0], data[1], data[2], data[3]);
case CX2341X_ENC_MUTE_VIDEO:
return cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2,
s->handle, data[0]);
case CX2341X_ENC_SET_FRAME_DROP_RATE:
return cx18_vapi(cx, CX18_CPU_SET_SKIP_INPUT_FRAME, 2,
s->handle, data[0]);
case CX2341X_ENC_MISC:
return cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 4,
s->handle, data[0], data[1], data[2]);
case CX2341X_ENC_SET_DNR_FILTER_MODE:
cx->filter_mode = (data[0] & 3) | (data[1] << 2);
return cx18_set_filter_param(s);
case CX2341X_ENC_SET_DNR_FILTER_PROPS:
cx->spatial_strength = data[0];
cx->temporal_strength = data[1];
return cx18_set_filter_param(s);
case CX2341X_ENC_SET_SPATIAL_FILTER_TYPE:
return cx18_vapi(cx, CX18_CPU_SET_SPATIAL_FILTER_TYPE, 3,
s->handle, data[0], data[1]);
case CX2341X_ENC_SET_CORING_LEVELS:
return cx18_vapi(cx, CX18_CPU_SET_MEDIAN_CORING, 5,
s->handle, data[0], data[1], data[2], data[3]);
}
CX18_WARN("Unknown cmd %x\n", cmd);
return 0;
}
int cx18_vapi_result(struct cx18 *cx, u32 data[MAX_MB_ARGUMENTS],
u32 cmd, int args, ...)
{
va_list ap;
int i;
va_start(ap, args);
for (i = 0; i < args; i++)
data[i] = va_arg(ap, u32);
va_end(ap);
return cx18_api(cx, cmd, args, data);
}
int cx18_vapi(struct cx18 *cx, u32 cmd, int args, ...)
{
u32 data[MAX_MB_ARGUMENTS];
va_list ap;
int i;
if (cx == NULL) {
CX18_ERR("cx == NULL (cmd=%x)\n", cmd);
return 0;
}
if (args > MAX_MB_ARGUMENTS) {
CX18_ERR("args too big (cmd=%x)\n", cmd);
args = MAX_MB_ARGUMENTS;
}
va_start(ap, args);
for (i = 0; i < args; i++)
data[i] = va_arg(ap, u32);
va_end(ap);
return cx18_api(cx, cmd, args, data);
}
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