/*
* cx18 mailbox functions
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
*
* 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-scb.h"
#include "cx18-irq.h"
#include "cx18-mailbox.h"
#define API_FAST (1 << 2) /* Short timeout */
#define API_SLOW (1 << 3) /* Additional 300ms timeout */
#define APU 0
#define CPU 1
#define EPU 2
#define HPU 3
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_DE_SET_MDL_ACK, 0),
API_ENTRY(CPU, CX18_CPU_DE_SET_MDL, API_FAST),
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;
}
static struct cx18_mailbox *cx18_mb_is_complete(struct cx18 *cx, int rpu,
u32 *state, u32 *irq, u32 *req)
{
struct cx18_mailbox *mb = NULL;
int wait_count = 0;
u32 ack;
switch (rpu) {
case APU:
mb = &cx->scb->epu2apu_mb;
*state = readl(&cx->scb->apu_state);
*irq = readl(&cx->scb->epu2apu_irq);
break;
case CPU:
mb = &cx->scb->epu2cpu_mb;
*state = readl(&cx->scb->cpu_state);
*irq = readl(&cx->scb->epu2cpu_irq);
break;
case HPU:
mb = &cx->scb->epu2hpu_mb;
*state = readl(&cx->scb->hpu_state);
*irq = readl(&cx->scb->epu2hpu_irq);
break;
}
if (mb == NULL)
return mb;
do {
*req = readl(&mb->request);
ack = readl(&mb->ack);
wait_count++;
} while (*req != ack && wait_count < 600);
if (*req == ack) {
(*req)++;
if (*req == 0 || *req == 0xffffffff)
*req = 1;
return mb;
}
return NULL;
}
long cx18_mb_ack(struct cx18 *cx, const struct cx18_mailbox *mb)
{
const struct cx18_api_info *info = find_api_info(mb->cmd);
struct cx18_mailbox *ack_mb;
u32 ack_irq;
u8 rpu = CPU;
if (info == NULL && mb->cmd) {
CX18_WARN("Cannot ack unknown command %x\n", mb->cmd);
return -EINVAL;
}
if (info)
rpu = info->rpu;
switch (rpu) {
case HPU:
ack_irq = IRQ_EPU_TO_HPU_ACK;
ack_mb = &cx->scb->hpu2epu_mb;
break;
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("Unknown RPU for command %x\n", mb->cmd);
return -EINVAL;
}
setup_page(SCB_OFFSET);
write_sync(mb->request, &ack_mb->ack);
write_reg(ack_irq, SW2_INT_SET);
return 0;
}
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 state = 0, irq = 0, req, oldreq, err;
struct cx18_mailbox *mb;
wait_queue_head_t *waitq;
int timeout = 100;
int cnt = 0;
int sig = 0;
int i;
if (info == NULL) {
CX18_WARN("unknown cmd %x\n", cmd);
return -EINVAL;
}
if (cmd == CX18_CPU_DE_SET_MDL)
CX18_DEBUG_HI_API("%s\n", info->name);
else
CX18_DEBUG_API("%s\n", info->name);
setup_page(SCB_OFFSET);
mb = cx18_mb_is_complete(cx, info->rpu, &state, &irq, &req);
if (mb == NULL) {
CX18_ERR("mb %s busy\n", info->name);
return -EBUSY;
}
oldreq = req - 1;
writel(cmd, &mb->cmd);
for (i = 0; i < args; i++)
writel(data[i], &mb->args[i]);
writel(0, &mb->error);
writel(req, &mb->request);
switch (info->rpu) {
case APU: waitq = &cx->mb_apu_waitq; break;
case CPU: waitq = &cx->mb_cpu_waitq; break;
case EPU: waitq = &cx->mb_epu_waitq; break;
case HPU: waitq = &cx->mb_hpu_waitq; break;
default: return -EINVAL;
}
if (info->flags & API_FAST)
timeout /= 2;
write_reg(irq, SW1_INT_SET);
while (!sig && readl(&mb->ack) != readl(&mb->request) && cnt < 660) {
if (cnt > 200 && !in_atomic())
sig = cx18_msleep_timeout(10, 1);
cnt++;
}
if (sig)
return -EINTR;
if (cnt == 660) {
writel(oldreq, &mb->request);
CX18_ERR("mb %s failed\n", info->name);
return -EINVAL;
}
for (i = 0; i < MAX_MB_ARGUMENTS; i++)
data[i] = readl(&mb->args[i]);
err = readl(&mb->error);
if (!in_atomic() && (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[])
{
int res = cx18_api_call(cx, cmd, args, data);
/* Allow a single retry, probably already too late though.
If there is no free mailbox then that is usually an indication
of a more serious problem. */
return (res == -EBUSY) ? cx18_api_call(cx, cmd, args, data) : res;
}
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 *cx = priv;
struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];
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);
}
