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path: root/drivers/media/dvb/firewire/cmp.c
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Diffstat (limited to 'drivers/media/dvb/firewire/cmp.c')
-rw-r--r--drivers/media/dvb/firewire/cmp.c171
1 files changed, 0 insertions, 171 deletions
diff --git a/drivers/media/dvb/firewire/cmp.c b/drivers/media/dvb/firewire/cmp.c
deleted file mode 100644
index 821e033d819..00000000000
--- a/drivers/media/dvb/firewire/cmp.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * FireDTV driver (formerly known as FireSAT)
- *
- * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
- * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
- *
- * 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.
- */
-
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/mutex.h>
-#include <linux/types.h>
-
-#include <asm/byteorder.h>
-
-#include <ieee1394.h>
-#include <nodemgr.h>
-
-#include "avc.h"
-#include "cmp.h"
-#include "firedtv.h"
-
-#define CMP_OUTPUT_PLUG_CONTROL_REG_0 0xfffff0000904ULL
-
-static int cmp_read(struct firedtv *fdtv, void *buf, u64 addr, size_t len)
-{
- int ret;
-
- if (mutex_lock_interruptible(&fdtv->avc_mutex))
- return -EINTR;
-
- ret = hpsb_node_read(fdtv->ud->ne, addr, buf, len);
- if (ret < 0)
- dev_err(&fdtv->ud->device, "CMP: read I/O error\n");
-
- mutex_unlock(&fdtv->avc_mutex);
- return ret;
-}
-
-static int cmp_lock(struct firedtv *fdtv, void *data, u64 addr, __be32 arg,
- int ext_tcode)
-{
- int ret;
-
- if (mutex_lock_interruptible(&fdtv->avc_mutex))
- return -EINTR;
-
- ret = hpsb_node_lock(fdtv->ud->ne, addr, ext_tcode, data,
- (__force quadlet_t)arg);
- if (ret < 0)
- dev_err(&fdtv->ud->device, "CMP: lock I/O error\n");
-
- mutex_unlock(&fdtv->avc_mutex);
- return ret;
-}
-
-static inline u32 get_opcr(__be32 opcr, u32 mask, u32 shift)
-{
- return (be32_to_cpu(opcr) >> shift) & mask;
-}
-
-static inline void set_opcr(__be32 *opcr, u32 value, u32 mask, u32 shift)
-{
- *opcr &= ~cpu_to_be32(mask << shift);
- *opcr |= cpu_to_be32((value & mask) << shift);
-}
-
-#define get_opcr_online(v) get_opcr((v), 0x1, 31)
-#define get_opcr_p2p_connections(v) get_opcr((v), 0x3f, 24)
-#define get_opcr_channel(v) get_opcr((v), 0x3f, 16)
-
-#define set_opcr_p2p_connections(p, v) set_opcr((p), (v), 0x3f, 24)
-#define set_opcr_channel(p, v) set_opcr((p), (v), 0x3f, 16)
-#define set_opcr_data_rate(p, v) set_opcr((p), (v), 0x3, 14)
-#define set_opcr_overhead_id(p, v) set_opcr((p), (v), 0xf, 10)
-
-int cmp_establish_pp_connection(struct firedtv *fdtv, int plug, int channel)
-{
- __be32 old_opcr, opcr;
- u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
- int attempts = 0;
- int ret;
-
- ret = cmp_read(fdtv, &opcr, opcr_address, 4);
- if (ret < 0)
- return ret;
-
-repeat:
- if (!get_opcr_online(opcr)) {
- dev_err(&fdtv->ud->device, "CMP: output offline\n");
- return -EBUSY;
- }
-
- old_opcr = opcr;
-
- if (get_opcr_p2p_connections(opcr)) {
- if (get_opcr_channel(opcr) != channel) {
- dev_err(&fdtv->ud->device,
- "CMP: cannot change channel\n");
- return -EBUSY;
- }
- dev_info(&fdtv->ud->device,
- "CMP: overlaying existing connection\n");
-
- /* We don't allocate isochronous resources. */
- } else {
- set_opcr_channel(&opcr, channel);
- set_opcr_data_rate(&opcr, IEEE1394_SPEED_400);
-
- /* FIXME: this is for the worst case - optimize */
- set_opcr_overhead_id(&opcr, 0);
-
- /* FIXME: allocate isochronous channel and bandwidth at IRM */
- }
-
- set_opcr_p2p_connections(&opcr, get_opcr_p2p_connections(opcr) + 1);
-
- ret = cmp_lock(fdtv, &opcr, opcr_address, old_opcr, 2);
- if (ret < 0)
- return ret;
-
- if (old_opcr != opcr) {
- /*
- * FIXME: if old_opcr.P2P_Connections > 0,
- * deallocate isochronous channel and bandwidth at IRM
- */
-
- if (++attempts < 6) /* arbitrary limit */
- goto repeat;
- return -EBUSY;
- }
-
- return 0;
-}
-
-void cmp_break_pp_connection(struct firedtv *fdtv, int plug, int channel)
-{
- __be32 old_opcr, opcr;
- u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
- int attempts = 0;
-
- if (cmp_read(fdtv, &opcr, opcr_address, 4) < 0)
- return;
-
-repeat:
- if (!get_opcr_online(opcr) || !get_opcr_p2p_connections(opcr) ||
- get_opcr_channel(opcr) != channel) {
- dev_err(&fdtv->ud->device, "CMP: no connection to break\n");
- return;
- }
-
- old_opcr = opcr;
- set_opcr_p2p_connections(&opcr, get_opcr_p2p_connections(opcr) - 1);
-
- if (cmp_lock(fdtv, &opcr, opcr_address, old_opcr, 2) < 0)
- return;
-
- if (old_opcr != opcr) {
- /*
- * FIXME: if old_opcr.P2P_Connections == 1, i.e. we were last
- * owner, deallocate isochronous channel and bandwidth at IRM
- */
-
- if (++attempts < 6) /* arbitrary limit */
- goto repeat;
- }
-}