diff options
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-mailbox.c')
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-mailbox.c | 387 |
1 files changed, 0 insertions, 387 deletions
diff --git a/drivers/media/video/ivtv/ivtv-mailbox.c b/drivers/media/video/ivtv/ivtv-mailbox.c deleted file mode 100644 index e3ce96763785..000000000000 --- a/drivers/media/video/ivtv/ivtv-mailbox.c +++ /dev/null @@ -1,387 +0,0 @@ -/* - mailbox functions - Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> - Copyright (C) 2004 Chris Kennedy <c@groovy.org> - Copyright (C) 2005-2007 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 "ivtv-driver.h" -#include "ivtv-mailbox.h" - -/* Firmware mailbox flags*/ -#define IVTV_MBOX_FIRMWARE_DONE 0x00000004 -#define IVTV_MBOX_DRIVER_DONE 0x00000002 -#define IVTV_MBOX_DRIVER_BUSY 0x00000001 -#define IVTV_MBOX_FREE 0x00000000 - -/* Firmware mailbox standard timeout */ -#define IVTV_API_STD_TIMEOUT 0x02000000 - -#define API_CACHE (1 << 0) /* Allow the command to be stored in the cache */ -#define API_RESULT (1 << 1) /* Allow 1 second for this cmd to end */ -#define API_FAST_RESULT (3 << 1) /* Allow 0.1 second for this cmd to end */ -#define API_DMA (1 << 3) /* DMA mailbox, has special handling */ -#define API_HIGH_VOL (1 << 5) /* High volume command (i.e. called during encoding or decoding) */ -#define API_NO_WAIT_MB (1 << 4) /* Command may not wait for a free mailbox */ -#define API_NO_WAIT_RES (1 << 5) /* Command may not wait for the result */ -#define API_NO_POLL (1 << 6) /* Avoid pointless polling */ - -struct ivtv_api_info { - int flags; /* Flags, see above */ - const char *name; /* The name of the command */ -}; - -#define API_ENTRY(x, f) [x] = { (f), #x } - -static const struct ivtv_api_info api_info[256] = { - /* MPEG encoder API */ - API_ENTRY(CX2341X_ENC_PING_FW, API_FAST_RESULT), - API_ENTRY(CX2341X_ENC_START_CAPTURE, API_RESULT | API_NO_POLL), - API_ENTRY(CX2341X_ENC_STOP_CAPTURE, API_RESULT), - API_ENTRY(CX2341X_ENC_SET_AUDIO_ID, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_VIDEO_ID, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_PCR_ID, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_FRAME_RATE, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_FRAME_SIZE, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_BIT_RATE, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_GOP_PROPERTIES, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_ASPECT_RATIO, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_DNR_FILTER_MODE, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_DNR_FILTER_PROPS, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_CORING_LEVELS, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_SPATIAL_FILTER_TYPE, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_VBI_LINE, API_RESULT), - API_ENTRY(CX2341X_ENC_SET_STREAM_TYPE, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_OUTPUT_PORT, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_AUDIO_PROPERTIES, API_CACHE), - API_ENTRY(CX2341X_ENC_HALT_FW, API_FAST_RESULT), - API_ENTRY(CX2341X_ENC_GET_VERSION, API_FAST_RESULT), - API_ENTRY(CX2341X_ENC_SET_GOP_CLOSURE, API_CACHE), - API_ENTRY(CX2341X_ENC_GET_SEQ_END, API_RESULT), - API_ENTRY(CX2341X_ENC_SET_PGM_INDEX_INFO, API_FAST_RESULT), - API_ENTRY(CX2341X_ENC_SET_VBI_CONFIG, API_RESULT), - API_ENTRY(CX2341X_ENC_SET_DMA_BLOCK_SIZE, API_CACHE), - API_ENTRY(CX2341X_ENC_GET_PREV_DMA_INFO_MB_10, API_FAST_RESULT), - API_ENTRY(CX2341X_ENC_GET_PREV_DMA_INFO_MB_9, API_FAST_RESULT), - API_ENTRY(CX2341X_ENC_SCHED_DMA_TO_HOST, API_DMA | API_HIGH_VOL), - API_ENTRY(CX2341X_ENC_INITIALIZE_INPUT, API_RESULT), - API_ENTRY(CX2341X_ENC_SET_FRAME_DROP_RATE, API_CACHE), - API_ENTRY(CX2341X_ENC_PAUSE_ENCODER, API_RESULT), - API_ENTRY(CX2341X_ENC_REFRESH_INPUT, API_NO_WAIT_MB | API_HIGH_VOL), - API_ENTRY(CX2341X_ENC_SET_COPYRIGHT, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_EVENT_NOTIFICATION, API_RESULT), - API_ENTRY(CX2341X_ENC_SET_NUM_VSYNC_LINES, API_CACHE), - API_ENTRY(CX2341X_ENC_SET_PLACEHOLDER, API_CACHE), - API_ENTRY(CX2341X_ENC_MUTE_VIDEO, API_RESULT), - API_ENTRY(CX2341X_ENC_MUTE_AUDIO, API_RESULT), - API_ENTRY(CX2341X_ENC_SET_VERT_CROP_LINE, API_FAST_RESULT), - API_ENTRY(CX2341X_ENC_MISC, API_FAST_RESULT), - /* Obsolete PULLDOWN API command */ - API_ENTRY(0xb1, API_CACHE), - - /* MPEG decoder API */ - API_ENTRY(CX2341X_DEC_PING_FW, API_FAST_RESULT), - API_ENTRY(CX2341X_DEC_START_PLAYBACK, API_RESULT | API_NO_POLL), - API_ENTRY(CX2341X_DEC_STOP_PLAYBACK, API_RESULT), - API_ENTRY(CX2341X_DEC_SET_PLAYBACK_SPEED, API_RESULT), - API_ENTRY(CX2341X_DEC_STEP_VIDEO, API_RESULT), - API_ENTRY(CX2341X_DEC_SET_DMA_BLOCK_SIZE, API_CACHE), - API_ENTRY(CX2341X_DEC_GET_XFER_INFO, API_FAST_RESULT), - API_ENTRY(CX2341X_DEC_GET_DMA_STATUS, API_FAST_RESULT), - API_ENTRY(CX2341X_DEC_SCHED_DMA_FROM_HOST, API_DMA | API_HIGH_VOL), - API_ENTRY(CX2341X_DEC_PAUSE_PLAYBACK, API_RESULT), - API_ENTRY(CX2341X_DEC_HALT_FW, API_FAST_RESULT), - API_ENTRY(CX2341X_DEC_SET_STANDARD, API_CACHE), - API_ENTRY(CX2341X_DEC_GET_VERSION, API_FAST_RESULT), - API_ENTRY(CX2341X_DEC_SET_STREAM_INPUT, API_CACHE), - API_ENTRY(CX2341X_DEC_GET_TIMING_INFO, API_RESULT /*| API_NO_WAIT_RES*/), - API_ENTRY(CX2341X_DEC_SET_AUDIO_MODE, API_CACHE), - API_ENTRY(CX2341X_DEC_SET_EVENT_NOTIFICATION, API_RESULT), - API_ENTRY(CX2341X_DEC_SET_DISPLAY_BUFFERS, API_CACHE), - API_ENTRY(CX2341X_DEC_EXTRACT_VBI, API_RESULT), - API_ENTRY(CX2341X_DEC_SET_DECODER_SOURCE, API_FAST_RESULT), - API_ENTRY(CX2341X_DEC_SET_PREBUFFERING, API_CACHE), - - /* OSD API */ - API_ENTRY(CX2341X_OSD_GET_FRAMEBUFFER, API_FAST_RESULT), - API_ENTRY(CX2341X_OSD_GET_PIXEL_FORMAT, API_FAST_RESULT), - API_ENTRY(CX2341X_OSD_SET_PIXEL_FORMAT, API_CACHE), - API_ENTRY(CX2341X_OSD_GET_STATE, API_FAST_RESULT), - API_ENTRY(CX2341X_OSD_SET_STATE, API_CACHE), - API_ENTRY(CX2341X_OSD_GET_OSD_COORDS, API_FAST_RESULT), - API_ENTRY(CX2341X_OSD_SET_OSD_COORDS, API_CACHE), - API_ENTRY(CX2341X_OSD_GET_SCREEN_COORDS, API_FAST_RESULT), - API_ENTRY(CX2341X_OSD_SET_SCREEN_COORDS, API_CACHE), - API_ENTRY(CX2341X_OSD_GET_GLOBAL_ALPHA, API_FAST_RESULT), - API_ENTRY(CX2341X_OSD_SET_GLOBAL_ALPHA, API_CACHE), - API_ENTRY(CX2341X_OSD_SET_BLEND_COORDS, API_CACHE), - API_ENTRY(CX2341X_OSD_GET_FLICKER_STATE, API_FAST_RESULT), - API_ENTRY(CX2341X_OSD_SET_FLICKER_STATE, API_CACHE), - API_ENTRY(CX2341X_OSD_BLT_COPY, API_RESULT), - API_ENTRY(CX2341X_OSD_BLT_FILL, API_RESULT), - API_ENTRY(CX2341X_OSD_BLT_TEXT, API_RESULT), - API_ENTRY(CX2341X_OSD_SET_FRAMEBUFFER_WINDOW, API_CACHE), - API_ENTRY(CX2341X_OSD_SET_CHROMA_KEY, API_CACHE), - API_ENTRY(CX2341X_OSD_GET_ALPHA_CONTENT_INDEX, API_FAST_RESULT), - API_ENTRY(CX2341X_OSD_SET_ALPHA_CONTENT_INDEX, API_CACHE) -}; - -static int try_mailbox(struct ivtv *itv, struct ivtv_mailbox_data *mbdata, int mb) -{ - u32 flags = readl(&mbdata->mbox[mb].flags); - int is_free = flags == IVTV_MBOX_FREE || (flags & IVTV_MBOX_FIRMWARE_DONE); - - /* if the mailbox is free, then try to claim it */ - if (is_free && !test_and_set_bit(mb, &mbdata->busy)) { - write_sync(IVTV_MBOX_DRIVER_BUSY, &mbdata->mbox[mb].flags); - return 1; - } - return 0; -} - -/* Try to find a free mailbox. Note mailbox 0 is reserved for DMA and so is not - attempted here. */ -static int get_mailbox(struct ivtv *itv, struct ivtv_mailbox_data *mbdata, int flags) -{ - unsigned long then = jiffies; - int i, mb; - int max_mbox = mbdata->max_mbox; - int retries = 100; - - /* All slow commands use the same mailbox, serializing them and also - leaving the other mailbox free for simple fast commands. */ - if ((flags & API_FAST_RESULT) == API_RESULT) - max_mbox = 1; - - /* find free non-DMA mailbox */ - for (i = 0; i < retries; i++) { - for (mb = 1; mb <= max_mbox; mb++) - if (try_mailbox(itv, mbdata, mb)) - return mb; - - /* Sleep before a retry, if not atomic */ - if (!(flags & API_NO_WAIT_MB)) { - if (time_after(jiffies, - then + msecs_to_jiffies(10*retries))) - break; - ivtv_msleep_timeout(10, 0); - } - } - return -ENODEV; -} - -static void write_mailbox(volatile struct ivtv_mailbox __iomem *mbox, int cmd, int args, u32 data[]) -{ - int i; - - write_sync(cmd, &mbox->cmd); - write_sync(IVTV_API_STD_TIMEOUT, &mbox->timeout); - - for (i = 0; i < CX2341X_MBOX_MAX_DATA; i++) - write_sync(data[i], &mbox->data[i]); - - write_sync(IVTV_MBOX_DRIVER_DONE | IVTV_MBOX_DRIVER_BUSY, &mbox->flags); -} - -static void clear_all_mailboxes(struct ivtv *itv, struct ivtv_mailbox_data *mbdata) -{ - int i; - - for (i = 0; i <= mbdata->max_mbox; i++) { - IVTV_DEBUG_WARN("Clearing mailbox %d: cmd 0x%08x flags 0x%08x\n", - i, readl(&mbdata->mbox[i].cmd), readl(&mbdata->mbox[i].flags)); - write_sync(0, &mbdata->mbox[i].flags); - clear_bit(i, &mbdata->busy); - } -} - -static int ivtv_api_call(struct ivtv *itv, int cmd, int args, u32 data[]) -{ - struct ivtv_mailbox_data *mbdata = (cmd >= 128) ? &itv->enc_mbox : &itv->dec_mbox; - volatile struct ivtv_mailbox __iomem *mbox; - int api_timeout = msecs_to_jiffies(1000); - int flags, mb, i; - unsigned long then; - - /* sanity checks */ - if (NULL == mbdata) { - IVTV_ERR("No mailbox allocated\n"); - return -ENODEV; - } - if (args < 0 || args > CX2341X_MBOX_MAX_DATA || - cmd < 0 || cmd > 255 || api_info[cmd].name == NULL) { - IVTV_ERR("Invalid MB call: cmd = 0x%02x, args = %d\n", cmd, args); - return -EINVAL; - } - - if (api_info[cmd].flags & API_HIGH_VOL) { - IVTV_DEBUG_HI_MB("MB Call: %s\n", api_info[cmd].name); - } - else { - IVTV_DEBUG_MB("MB Call: %s\n", api_info[cmd].name); - } - - /* clear possibly uninitialized part of data array */ - for (i = args; i < CX2341X_MBOX_MAX_DATA; i++) - data[i] = 0; - - /* If this command was issued within the last 30 minutes and with identical - data, then just return 0 as there is no need to issue this command again. - Just an optimization to prevent unnecessary use of mailboxes. */ - if (itv->api_cache[cmd].last_jiffies && - time_before(jiffies, - itv->api_cache[cmd].last_jiffies + - msecs_to_jiffies(1800000)) && - !memcmp(data, itv->api_cache[cmd].data, sizeof(itv->api_cache[cmd].data))) { - itv->api_cache[cmd].last_jiffies = jiffies; - return 0; - } - - flags = api_info[cmd].flags; - - if (flags & API_DMA) { - for (i = 0; i < 100; i++) { - mb = i % (mbdata->max_mbox + 1); - if (try_mailbox(itv, mbdata, mb)) { - write_mailbox(&mbdata->mbox[mb], cmd, args, data); - clear_bit(mb, &mbdata->busy); - return 0; - } - IVTV_DEBUG_WARN("%s: mailbox %d not free %08x\n", - api_info[cmd].name, mb, readl(&mbdata->mbox[mb].flags)); - } - IVTV_WARN("Could not find free DMA mailbox for %s\n", api_info[cmd].name); - clear_all_mailboxes(itv, mbdata); - return -EBUSY; - } - - if ((flags & API_FAST_RESULT) == API_FAST_RESULT) - api_timeout = msecs_to_jiffies(100); - - mb = get_mailbox(itv, mbdata, flags); - if (mb < 0) { - IVTV_DEBUG_WARN("No free mailbox found (%s)\n", api_info[cmd].name); - clear_all_mailboxes(itv, mbdata); - return -EBUSY; - } - mbox = &mbdata->mbox[mb]; - write_mailbox(mbox, cmd, args, data); - if (flags & API_CACHE) { - memcpy(itv->api_cache[cmd].data, data, sizeof(itv->api_cache[cmd].data)); - itv->api_cache[cmd].last_jiffies = jiffies; - } - if ((flags & API_RESULT) == 0) { - clear_bit(mb, &mbdata->busy); - return 0; - } - - /* Get results */ - then = jiffies; - - if (!(flags & API_NO_POLL)) { - /* First try to poll, then switch to delays */ - for (i = 0; i < 100; i++) { - if (readl(&mbox->flags) & IVTV_MBOX_FIRMWARE_DONE) - break; - } - } - while (!(readl(&mbox->flags) & IVTV_MBOX_FIRMWARE_DONE)) { - if (time_after(jiffies, then + api_timeout)) { - IVTV_DEBUG_WARN("Could not get result (%s)\n", api_info[cmd].name); - /* reset the mailbox, but it is likely too late already */ - write_sync(0, &mbox->flags); - clear_bit(mb, &mbdata->busy); - return -EIO; - } - if (flags & API_NO_WAIT_RES) - mdelay(1); - else - ivtv_msleep_timeout(1, 0); - } - if (time_after(jiffies, then + msecs_to_jiffies(100))) - IVTV_DEBUG_WARN("%s took %u jiffies\n", - api_info[cmd].name, - jiffies_to_msecs(jiffies - then)); - - for (i = 0; i < CX2341X_MBOX_MAX_DATA; i++) - data[i] = readl(&mbox->data[i]); - write_sync(0, &mbox->flags); - clear_bit(mb, &mbdata->busy); - return 0; -} - -int ivtv_api(struct ivtv *itv, int cmd, int args, u32 data[]) -{ - int res = ivtv_api_call(itv, 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) ? ivtv_api_call(itv, cmd, args, data) : res; -} - -int ivtv_api_func(void *priv, u32 cmd, int in, int out, u32 data[CX2341X_MBOX_MAX_DATA]) -{ - return ivtv_api(priv, cmd, in, data); -} - -int ivtv_vapi_result(struct ivtv *itv, u32 data[CX2341X_MBOX_MAX_DATA], int 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 ivtv_api(itv, cmd, args, data); -} - -int ivtv_vapi(struct ivtv *itv, int cmd, int args, ...) -{ - u32 data[CX2341X_MBOX_MAX_DATA]; - 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 ivtv_api(itv, cmd, args, data); -} - -/* This one is for stuff that can't sleep.. irq handlers, etc.. */ -void ivtv_api_get_data(struct ivtv_mailbox_data *mbdata, int mb, - int argc, u32 data[]) -{ - volatile u32 __iomem *p = mbdata->mbox[mb].data; - int i; - for (i = 0; i < argc; i++, p++) - data[i] = readl(p); -} - -/* Wipe api cache */ -void ivtv_mailbox_cache_invalidate(struct ivtv *itv) -{ - int i; - for (i = 0; i < 256; i++) - itv->api_cache[i].last_jiffies = 0; -} |